Leaf through the premier custom software development companies in London that customize, maintain and/or build high-quality solutions, mobile applications and more. Filter listings by reviews, pricing, team size to find the ideal team for your project requirements and budget.
  

Best London Software Development Firm Rankings

464 Companies
Rankings updated: May 14, 2025
  • Naked Development

    We are a Creative Development Agency & Consultancy.
    First we listen and strip down your idea to reveal the core of your business objectives.This means designing a strategy that will best support the users total experience, end-to-end.Then our  [... view the full profile of Naked Development]
    London, United Kingdom
    Under 49 Inquire $25,000 - $50,000
    VISIT WEBSITE
  • AppMakers USA

    Top Rated: 5-star Average Reviews
    Top US Mobile & Web App Development Agency
    AppMakersUSA is a US-based full-service mobile application development company. We specialize in building cross-platform websites and apps (meaning iOS & Android for the price of one), informing your  [... view the full profile of AppMakers USA]
    London, United Kingdom
    Under 49 Inquire $10,000 - $25,000
    VISIT WEBSITE
  • ELEKS

    ELEKS, a trusted partner for guaranteed software engineering excellence, quality, and transparency.
    ELEKS is the partner of choice for many leading enterprises, SMEs and technology challengers. We help businesses elevate their value through custom software development, product design, QA and  [... view the full profile of ELEKS]
    London, United Kingdom
    1000 & Up $50/hr $25,000 - $50,000
    VISIT WEBSITE
  • Goji Labs

    Top Rated: 5-star Average Reviews
    Goji Labs - Building It Right the First Time
    We're Goji Labs—your future team for building smart, beautiful apps that actually work. Strategy? Yep. UX? Obsessed. Code? Clean. We've launched hundreds of products, and were just getting started.  [... view the full profile of Goji Labs]
    London, United Kingdom
    Under 49 $149/hr $25,000 - $50,000
    VISIT WEBSITE
  • Mercury Development

    Quality, Experience, Transparency, Results
    Mercury Development offers best in class Software Development, Mobile Apps, UI/UX, QA, ML, Data Science and more. With over 23 years in business, and over 400 employees, Mercury has the experience  [... view the full profile of Mercury Development]
    London, United Kingdom
    250 - 499 $50/hr Inquire
    VISIT WEBSITE
  • Top Rated: 5-star Average Reviews
    DesignRush Design Award Winner
    Get what matters!
    Suffescom is a leading mobile app development company offering top-notch solutions across diverse industries.  [... view the full profile of Suffescom Solutions Inc]
    London, United Kingdom
    250 - 499 Inquire $10,000 - $25,000
    VISIT WEBSITE
  • Snotor

    Delivering results. Efficiently and effectively
    Snotor is a Web and Mobile Application Development company that helps you enhance the value of your business, reach your strategic goals, and win the market. With 16 years of experience and 450+  [... view the full profile of Snotor]
    London, United Kingdom
    50 - 99 $40/hr $10,000 - $25,000
    VISIT WEBSITE
  • Takeaway Reality

    AR, VR and Metaverse Agency.
    We are an award-winning AR, VR and Metaverse agency working with some of the world's largest brands as well as SME's and startups. Some of our most notable clients include: Microsoft, Peugeot  [... view the full profile of Takeaway Reality]
    London, United Kingdom
    Under 49 Inquire Inquire
    VISIT WEBSITE
  • Digis

    Certified Experts, Patented Excellence
    Digis is a Software Development company with a team of 200+ professionals dedicated to Custom Development (Web & Mobile) and design. We have a wealth of experience across several industries  [... view the full profile of Digis]
    London, United Kingdom
    100 - 249 $39/hr $25,000 - $50,000
    VISIT WEBSITE
  • TRIARE

    TRIARE unlocks IT potential of YOUR business
    TRIARE provides comprehensive services encompassing the entire software development lifecycle of WEB and MOBILE applications, along with UI/UX Design, Prototyping, Business Analysis, and software  [... view the full profile of TRIARE]
    London, United Kingdom
    50 - 99 $45/hr Inquire
    VISIT WEBSITE
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  • Vention

    Engineering peace of mind
    At Vention, unparalleled customer care isnt just a promise its our mission. We blend personalized experience, unwavering attention to detail, and a genuine passion for your business, ensuring that  [... view the full profile of Vention]
    London, United Kingdom
    1000 & Up $50/hr $25,000 - $50,000
    VISIT WEBSITE
  • Infinum

    Solving complex problems with design and technology since 2005.
    We craft digital products that streamline your processes, expand your customer base, and drive business growth. Strategically located within your reach, we'll take your ambitious project from an  [... view the full profile of Infinum]
    London, United Kingdom
    250 - 499 Inquire $50,000 & Up
    VISIT WEBSITE
  • Deshine

    Illuminating the Art of Design.
    At Deshine, we imagine a world where every entrepreneur, creator, or visionary can see their business flourishwhere campaigns and ideas arent just launched but grow and succeed over time.  [... view the full profile of Deshine]
    London, United Kingdom
    Under 49 Inquire Inquire
    VISIT WEBSITE
  • Hexploits

    Software Consultancy & Solutions - Built in London, Delivered Worldwide.
    We dont just build solutions we consult, engineer, and deliver services that help businesses move faster, scale smarter, and meet time-to-market demands. Every partnership begins with understanding  [... view the full profile of Hexploits]
    London, United Kingdom
    Under 49 Inquire $10,000 - $25,000
    VISIT WEBSITE
  • Probey Services

    Top Rated: 5-star Average Reviews
    Shaping the Future of Business.
    Probey Services Private Limited is a dynamic technology with digital marketing services, headquartered in Noida. At Probey, we are more than service providers; were your partners. We focus on  [... view the full profile of Probey Services]
    London, United Kingdom
    1000 & Up $1/hr Under $1,000
  • Zazz

    Top Rated: 5-star Average Reviews
    Let's get your business Future-Ready!
    Zazz equips your business digitally with mobile, web & custom software development solutions, helping you stay relevant in the dynamic market filled with growing customer needs.  [... view the full profile of Zazz]
    London, United Kingdom
    250 - 499 $45/hr Inquire
  • Newwave Solutions

    Top Rated: 5-star Average Reviews
    Top-Tier Software Development Agency
    Newwave Solutions is a top-notch IT outsourcing company with over 12+ years of experience and 300+ dedicated employees.  [... view the full profile of Newwave Solutions]
    London, United Kingdom
    500 - 999 $25/hr $25,000 - $50,000
  • Peiko

    Top Rated: 5-star Average Reviews
    Technical partners | Full-service Web development | IT Outsourcing | Blockchain Development Company
    Peiko is a development company that helps startups and established businesses turn ideas into high-quality digital products. For years, weve been building solutions that drive growth, support  [... view the full profile of Peiko]
    London, United Kingdom
    100 - 249 $40/hr $25,000 - $50,000
  • Magneto IT Solutions

    Top Rated: 5-star Average Reviews
    Empowering eCommerce Excellence
    We are Magneto. A team of digital commerce experts working with manufacturers, wholesalers, and retailers globally, turning ideas into unique customer and content-centric experiences using a  [... view the full profile of Magneto IT Solutions]
    London, United Kingdom
    250 - 499 $25/hr $10,000 - $25,000
  • Pixelette Technologies - Leading the way in AI & Blockchain
    Pixelette Technologies - Leading the way in AI & Blockchain  [... view the full profile of Pixelette Technologies]
    London, United Kingdom
    250 - 499 $25/hr $1,000 - $10,000
  • Fulminous Software

    We love to build ask for it and have it.
    We are Fulminous Software, skilled website, mobile app development & website design company with a proven history of creating popular and profitable website & application.  [... view the full profile of Fulminous Software]
    London, United Kingdom
    50 - 99 $25/hr $1,000 - $10,000
  • Zamratech

    Top Rated: 5-star Average Reviews
    Your Gateway to Tech Excellence
    Zamratech, a globally recognized company based in the United States, has become a leading worldwide application developer. We provide a comprehensive range of digital services, including web design  [... view the full profile of Zamratech]
    London, United Kingdom
    100 - 249 $35/hr $1,000 - $10,000
  • CraftedQ

    Top 1% Software Development Company Trusted By Fortune 500
    CraftedQ is a one-stop shop for all your digital needs. Our team of 300+ experts in full-stack development, DevOps, cloud architecture, product development, digital consulting, UI/UX design and  [... view the full profile of CraftedQ]
    London, United Kingdom
    250 - 499 $25/hr $25,000 - $50,000
  • Softermii

    Succeed Without (L) imitations
    Softermii (https://www.softermii.com/) is an outsourcing/outstaffing company with more than 8 years of experience in web and mobile application development with a team of more than 120 specialists  [... view the full profile of Softermii]
    London, United Kingdom
    100 - 249 $45/hr $25,000 - $50,000
  • Andersen

    FinTech Unleashed: React Native Excellence by Andersen"
    Choose Andersen for top-tier React Native development in the FinTech industry. Trust our 190+ experts to ensure 100% compliance with industry standards.  [... view the full profile of Andersen]
    London, United Kingdom
    1000 & Up $50/hr $50,000 & Up
  • DigitalSuits

    E-commerce Experts | Web Development, Shopify/ Shopify Plus
    DigitalSuits is a full-cycle ecommerce agency with a focus on Shopify development and extensive expertise in custom software development.  [... view the full profile of DigitalSuits]
    London, United Kingdom
    50 - 99 $45/hr $10,000 - $25,000
  • Apptension

    Apptension helps brands, investors and innovators build their digital products.
    Apptension is a creative product studio focused on crafting innovative experiences and delivering cutting-edge tech to our partners.We work with founders, investors, and creative agencies to help  [... view the full profile of Apptension]
    London, United Kingdom
    50 - 99 $58/hr Inquire
  • GO ONLINE

    Magic Code Recipe Developed To Combine Reliability With Innovation.
    Custom Software Development Experts  [... view the full profile of GO ONLINE]
    London, United Kingdom
    Under 49 $35/hr Inquire
  • TekRevol

    Your Vision. Our Expertise. Shaping the Future!
    TekRevol is a global leader in digital innovation, dedicated to creating advanced products ranging from mobile apps to AI-enhanced software solutions. Our goal is to help businesses outperform their  [... view the full profile of TekRevol]
    London, United Kingdom
    250 - 499 $35/hr $25,000 - $50,000
  • Gecko Dynamics

    Since 2002 in the software development business. Companies from 27 industries choose us.
    With over 20 years of industry experience, Gecko Dynamics is a trusted partner for startups and enterprises. Our team delivers end-to-end solutions using Java, Angular, Flutter, and AWS. From ideation  [... view the full profile of Gecko Dynamics]
    London, United Kingdom
    50 - 99 $50/hr Inquire
  • Computools

    Unlock Tomorrow.
    GET OUR EXPERT CONSULTING AND SOFTWARE ENGINEERING SERVICES.  [... view the full profile of Computools]
    London, United Kingdom
    250 - 499 $40/hr $50,000 & Up
  • iQlance Solutions

    Empowering Businesses with Custom App and Software Solutions
    iQlance is a leading web &mobile app development company with a strong presence in Dallas, USA. With extensive experience in crafting and deploying innovative mobile applications and software, we  [... view the full profile of IQlance Solutions]
    London, United Kingdom
    50 - 99 $25/hr $10,000 - $25,000
  • TechnoScore

    Web & App Development Company
    TechnoScore is a reputed web and mobile app development company located in Laguna Beach, California.  [... view the full profile of TechnoScore]
    London, United Kingdom
    100 - 249 $14/hr $1,000 - $10,000
  • dotcode

    Secure IT Solutions for a more secure environment
    dotcode is a full-cycle software development company. At dotcode, we know how its crucial to understand the users needs when building a successful product. Our team combines amazing minds in  [... view the full profile of Dotcode]
    London, United Kingdom
    Under 49 $35/hr $25,000 - $50,000
  • Israel IT

    Scaling Your Business with Custom Solutions and Dedicated Offshore Teams
    srael IT, a top offshore solutions firm, offers custom dev services and dedicated offshore teams of software developers, web designers, and marketing experts. Join a community of satisfied customers  [... view the full profile of Israel IT]
    London, United Kingdom
    100 - 249 $50/hr $10,000 - $25,000
  • Zudu

    DesignRush Design Award Winner
    Dreams Have No Limits In A Digital World
    Why not try some top quality UK delivery. Zudu is an award-winning, industry-leading, software development agency based in London and Dundee. Our specialist team create jaw-dropping digital  [... view the full profile of Zudu]
    London, United Kingdom
    Under 49 $50/hr $10,000 - $25,000
  • GroupBWT

    We build tailored data platforms that help businesses collect, transform and turn data into insights
    GroupBWT is a consulting firm specializing in data management and the construction of data platforms. Our approach combines classical data warehousing with robust visualization tools, ETL processes  [... view the full profile of GroupBWT]
    London, United Kingdom
    50 - 99 $45/hr $1,000 - $10,000
  • Shinetech Software

    Great software starts with great people
    We are Shinetech - an international software development company specializing in dedicated development. Agile is our primary software development model, and we offer a one-week free trial period where  [... view the full profile of Shinetech Software]
    London, United Kingdom
    500 - 999 $35/hr $25,000 - $50,000
  • Light IT

    Deep tech expertise for SME
    Light IT provides the following services on the global tech market:- consulting clients on IT products and services- custom product and software development- provision of resources at the  [... view the full profile of Light IT]
    London, United Kingdom
    100 - 249 $40/hr $10,000 - $25,000
  • Imaginary Cloud

    Promising great service at competitive rates!
    Imaginary Cloud, boasting over a decade of experience, achieved recognition as one of the Top 100 Fastest Growing Companies and Top 1000 Global Companies in both 2020 and 2021. In 2021, it secured the  [... view the full profile of Imaginary Cloud]
    London, United Kingdom
    50 - 99 $50/hr $1,000 - $10,000
  • SiliconMint

    Dedicated teams that build complex software systems
    SiliconMint designs, develops, and supports mission-critical software systems. Based in San Francisco, SiliconMint has offices in New York and Europe to serve clients across the globe.  [... view the full profile of SiliconMint]
    London, United Kingdom
    50 - 99 $55/hr $25,000 - $50,000
  • itCraft

    High-end development for mobile innovation leaders
    Top rated software house that delivers mobile and web application for clients around the world. 11 years on the market, 100+ engineers, 250+ projects delivered. All aspects related to safety  [... view the full profile of ItCraft]
    London, United Kingdom
    100 - 249 $50/hr $50,000 & Up
  • Top Mobile App and Web Development Company
    Promatics Technologies is a premier web and mobile apps development company. As a seasoned team of 100+ developers we have built a strong foundation of web and mobile app development processes with  [... view the full profile of Promatics Technologies Private Limited]
    London, United Kingdom
    100 - 249 $15/hr $10,000 - $25,000
  • Mobirevo

    Making functional and user friendly software's for humans
    Mobirevo is a Leading custom software development agency focused on web, mobile app development & saas application development, Enterprise resource planning, and management software (ERP software  [... view the full profile of Mobirevo]
    London, United Kingdom
    Under 49 $200/hr $10,000 - $25,000
  • WTT Solutions

    Custom software development services and mobile app development
    WTT Solutions is a custom software development agency that helps businesses achieve their goals through cutting-edge technology. We specialize in web development, crafting high-performance platforms  [... view the full profile of WTT Solutions]
    London, United Kingdom
    Under 49 $40/hr $10,000 - $25,000
  • We create digital products and grow with our partners!
    Rocketech is a software development company collaborating with 100+ Middle and Senior level IT and business professionals and specialising in analytics-driven web and mobile development. Our team has  [... view the full profile of Rocketech Development]
    London, United Kingdom
    50 - 99 $30/hr $1,000 - $10,000
  • Hire World-Class Developers.
    Outsource Your Software Development Services to DreamzTech, the 10 Yrs.+ Exp. Award-Winning Software Design & Development Company based in USA, UK, India & South Africa. Hire World-Class Offshore  [... view the full profile of DreamzTech Solutions]
    London, United Kingdom
    250 - 499 $20/hr $10,000 - $25,000
  • DeepInspire

    Fintech Software Development Services
    DeepInspire is a boutique software development company with a focus on fintech software development, offering services such as IT consulting, technical due diligence, digital transformation, product  [... view the full profile of DeepInspire]
    London, United Kingdom
    Under 49 $60/hr $10,000 - $25,000
  • Dev Technosys

    INSPIERD BY THOUGHTS
    Dev Technosys is an ISO 9001:2008 certified web and mobile app development company. Dev Technosys started back in 2010, is a perfect fusion of talent, endeavoring over 950+ successful Mobile and Web  [... view the full profile of Dev Technosys]
    London, United Kingdom
    100 - 249 $20/hr Inquire
  • SENLA

    Software Engineering Laboratory
    SENLA is the leading provider of Talent Augmentation in Europe, with a team of 700+ tech experts. Trusted by BOSCH, IKEA, Bayer, and Deloitte, we help scale tech teams with skilled engineers  [... view the full profile of SENLA]
    London, United Kingdom
    500 - 999 $49/hr $10,000 - $25,000
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What can top London custom software development companies do for businesses?

Top London custom software development companies help businesses increase profitability and reduce operational expenses by engineering tailored solutions that automate processes, improve system efficiencies, and enable data-driven decisions.

More specifically, these companies can deliver:

  1. Enhanced customer experience by developing intuitive, user-friendly applications that provide seamless interactions, personalized services, and faster response times
  2. Improved strategic planning by integrating data analytics and business intelligence tools that provide real-time insights and enable informed decision making
  3. Stronger system security by implementing robust cybersecurity measures, including multi-factor authentication, vigilant monitoring, and system recovery management
  4. Increased revenue opportunities by creating custom digital products, services, and monetization models that meet high market demands
  5. Scalability and long-term growth with flexible, custom-built software that adapts to evolving business needs and market demands without requiring costly overhauls

To further highlight the benefits London software development firms can deliver, our researchers have highlighted the following case study:

  • Challenge: A business approached Newwave Solutions to develop a blockchain-based web game that is accessible across devices. In the game, players attack monsters, gain more power the longer they stay connected, and compete for the highest scores daily.
  • Solution: To build such a game, Newwave Solutions leveraged Node.js, Cocos Creator, and PostgreSQL for its main tech stack. It also implemented functions and features like player account management, reconnect mechanism, save game function, and automatic score calculation. Moreover, it integrated an authoritative server mechanism to prevent cheating.
  • Results: The client was impressed by Newwaves Solutions’ game design and development, resulting in a highly efficient, stable, secure, and captivating cross-platform game. It reported zero instances of cheating, recorded over 15,000 new players, and marked an overall performance improvement.

What services do London software development firms typically provide?

London software development firms offer a wide range of services that cater to the unique needs of businesses across industries. These include:

  1. Custom software development
    Engineering software solutions from scratch to meet specific business functions, processes, tech stack, and user behaviors
  2. Web development
    Creating the sitemap, layout, user interface, content management system (CMS), and other elements of a website or web app to propel a business’s online presence
  3. Mobile app development
    Constructing software for iOS and Android to improve user engagement and expand the business's reach across mobile platforms
  4. Cloud solutions development
    Building solutions on a cloud environment to help businesses efficiently and securely store, manage, and access data across devices with internet access
  5. Software integration
    Crafting solutions, often application programming interfaces (APIs), to connect separate digital systems and apps for seamless data exchanges and streamlined operations
  6. Software maintenance and support
    Monitoring the performance of existing technologies and implementing updates and adjustments to ensure they continue to operate smoothly

Some other sought-after services by London software development companies include artificial intelligence (AI) development, DevOps support, and cybersecurity.

How many custom software development companies are in London?

There are over 27,300 software development companies in London, with a compound annual growth rate of 3.2% from 2019 to 2024. Among the 7,600 software development companies listed on DesignRush, 450 have locations in London.

Here’s a breakdown of the featured agencies based on company size:

Company size Number of agencies
Small (Under 49 employees) 212
Mid-sized (50-249 employees) 161
Large (250+ employees) 57
Enterprise (1000+ employees) 21

The dominance of small- and medium-sized software development companies in London shows a high demand for boutique firms that offer highly specialized services. This may also be due to the city’s strong entrepreneurial community, with 98% of London's businesses categorized as small.

On the other hand, the presence of large and enterprise software development firms indicates a considerable demand for developers who can handle more complex and large-scale projects.

How much do London software development firms charge for their services?

London software development firms charge between £8,000 and £90,000 for a basic solution. The final price will depend on project complexity and scope, service type, team composition, tech stack, number of features and integrations, and development methodology.

Here’s a breakdown of how much each aspect plays into the final project price:

Service Percentage of total project cost
Planning and analysis5%-15%
Design and coding40%-70%
Testing and quality assurance15%-25%
Maintenance and updates15%-20% annually
Support and bug fixing10%-20%

The top 50 London software development companies on DesignRush charge approximately $45 per hour. 6.4% of the agencies listed accept projects with a minimum budget of $1,000, offering affordable services for simple projects, including proof of concept design and minimum viable product (MVP) development. In contrast, 6% require a minimum budget of $50,000, providing higher-level skills for more complex development projects, such as enterprise solution development.

Find a London software development firm that matches your budget by exploring our directory and filtering your search by minimum budget, hourly rates, and team size.

How do I choose the best custom software development company in London?

To choose the best custom software development company in London, consider following these steps:

  1. Outline your project requirements
    Define your software’s purpose, features, functionalities, integrations, technologies, target users, timeline, and budget to find an agency that aligns closely with your needs.
  2. Commence your search
    Access Google, publications, listings, and reputable directories like DesignRush to search for an agency that is experienced with your technical requirements.
  3. Evaluate past works
    Review the company’s case studies and portfolio, particularly those that are similar to your own, to see their ability to deliver quality solutions and drive measurable business impact.
  4. Check industry standing
    Look at client reviews, testimonials, recognitions, and certifications to gather insights about the company’s level of experience, work process, and client service.
  5. Send your request for proposal (RFP)
    Include your technical requirements, target users, and business profile in your RFP to get detailed insights into their approach, pricing, and timeline.
  6. Book an introductory meeting
    Schedule a meeting with the agencies and ask them about their approach to your project, security and privacy practices, and maintenance and support services.
  7. Understand the development process
    Inquire about the development process, from planning to testing and deployment. A streamlined process reduces risks and leads to timely delivery.
  8. Select your partner
    Choose a software developer that provides required technical expertise, aligns with your culture and values, and understands your project goals.

Need help finding a software development company in London? Visit our Marketplace and send us your project details. We’ll send a list of the most suitable candidates free of charge!

What software development processes do companies follow in London?

Software development companies in London typically follow a structured, well-defined process to ensure the successful delivery of custom software solutions. The stages are as follows:

  • Planning and strategy
    Outlining the scope of the project, timelines, tools, resources, and milestones, and assessing costs, risks, and limitations
  • Feasibility analysis
    Understanding the business goals, software requirements, and user needs to define project scope, features, functionality, and technical specifications
  • System architecture design
    Defining the underlying structure, databases, user interfaces, and overall blueprint of the solution
  • Development and coding
    Writing the code based on design specifications and performing initial tests to ensure functionality
  • Testing and quality assurance (QA)
    Auditing and testing the entire solution before launch to ensure it is bug-free and works as intended
  • Deployment
    Setting up servers, configuring cloud infrastructure, and releasing the solution into the product environment
  • Maintenance and support
    Fixing bugs and performing updates and enhancements so the software remains functional

What industries do custom software development companies in London usually serve?

Custom software development companies in London serve a diverse range of industries, tailoring their services to meet the unique needs of each sector. Here are five of the major industries:

  • Finance
    London’s banks, insurance companies, and other financial institutions accounted for 50% of the finance sector’s economic output in 2024. To remain competitive, these organizations work with software developers to enhance transaction security, streamline operations, and ensure compliance with industry regulations.
  • Tech
    Constituting 12% of the city’s gross value added (GVA), the digital and tech sector is a significant economic player. Businesses in this industry partner with software development companies to create their digital products, modernize systems, and outsource highly specialized expertise, like blockchain development.
  • Wholesale and Retail
    With nearly 94,000 retailers and wholesalers in the city, businesses are increasingly seeking custom software solutions to elevate shopping experiences. Thanks to custom software development companies, businesses in the wholesale and retail industry can increase operational efficiency using eCommerce stores, supply chain management solutions, and customer relationship management (CRM) systems.
  • Healthcare
    London’s healthcare system is substantially expanding, with a 17.8% total revenue growth in 2024. Software development firms help businesses and institutions in this sector by producing electronic health record systems that increase data privacy and data exchange, resulting in more accurate patient diagnoses. It can also engineer custom solutions, like robotic surgery systems, to advance medical innovations and clinical studies.
  • Arts
    Home to prominent institutions, like the Tate Gallery, the British Museum, and Madame Tussauds, London is the arts and culture hub of the country. Museums, galleries, and art institutions benefit from software development companies because these companies digitize their collections, improve preservation efforts, and amplify audience experiences through interactive installations.

Beyond these five industries, London software development firms also specialize in human resources, hospitality, and education. Discover more about these developers by visiting our directory and filtering your search by industry, area of expertise, and reviews.

What questions should I ask a London software development firm before hiring one?

Before hiring a London software development firm, ask about its experience and processes to verify that it is reliable and capable. Here are some questions to ask:

Its Relevant Background

  1. Can you provide case studies or references from clients in my industry?
  2. What are some of your most successful projects and why?
  3. How do you keep your team updated with the latest technology trends?
  4. How long have you been providing custom software development solutions?

Its Services and Processes

  1. What development methodologies do you follow (e.g., Agile, Waterfall, Scrum)?
  2. What technologies or platforms do you specialize in?
  3. How do you approach the initial requirement gathering and project scoping?
  4. What is your process for ensuring quality control and bug-free software?
  5. Do you offer post-launch support and maintenance services?
  6. How do you ensure the security and scalability of the software you build?
  7. How do you handle changes in project scope or requirements during development?
  8. What is your disaster recovery and risk management strategy?
  9. What services do you outsource?

Related to Your Project

  1. How familiar are you with my project requirements?
  2. Who will be on my team, and what are their credentials?
  3. What is your estimated timeline for delivering my project?
  4. How do you ensure that the software aligns with my business goals and user needs?
  5. Will I be involved in the development process, and if so, how often will you communicate with me?
  6. Will you turn over the codebase and documentation to us after completing the project?
  7. Who will own the rights to the software?

What are the top 10 best-rated custom software development companies in London?

The top 10 best-rated custom software development in London are:

  1. Zazz
    • 5.0 stars on DesignRush (92 reviews)
    • 4.6 stars on Google (81 reviews)
    • Top clients: Public Services Health & Safety Association, TaxVolt, Alpha Match, &Jane
  2. Goji Labs
    • 5.0 stars on DesignRush (73 reviews)
    • 4.9 stars on Google (50 reviews)
    • Top clients: World Wildlife Fund, World Health Organization, Monster Energy, Elf on the Shelf
  3. Newwave Solutions
    • 5.0 stars on DesignRush (67 reviews)
    • 4.9 stars on Google (67 reviews)
    • Top clients: Geeky Ants, Pop Sicle Inc, Crane, Nipon Express,
  4. Peiko
    • 5.0 stars on DesignRush (59 reviews)
    • 4.5 stars on Google (15 reviews)
    • Top clients: Bitcoin Addition, Stark, TopUp, GS Diamonds
  5. Magneto IT Solutions
    • 5.0 stars on DesignRush (50 reviews)
    • 4.1 stars on Google (46 reviews)
    • Top clients: Traffic NYC, Elite Screens, Modern Furniture Direct, Race Chip
  6. Suffescom Solutions Inc
    • 5.0 stars on DesignRush (38 reviews)
    • 4.6 stars on Google (94 reviews)
    • Top clients: King Cups, Epic, Uber, Cash App
  7. DevsData Tech Talent
    • 5.0 stars on DesignRush (37 reviews)
    • 5.0 stars on Google (27 reviews)
    • Top clients: dotData Inc, Epinote, CodeAlly, Idealab
  8. Zamratech
    • 5.0 stars on DesignRush (33 reviews)
    • Top clients: Walmart, Nestle, New York Dating, Rx Calendar
  9. Fulminous Software
    • 4.9 stars on DesignRush (40 reviews)
    • 4.9 stars on Google (49 reviews)
    • Top clients: Easy Recovery, Planet Alpha, Ridecare, PlateRate
  10. Digis
    • 4.9 stars on DesignRush (30 reviews)
    • Top clients: PWC, HubSpot, Noty.ai, Otoqi

Why People Trust DesignRush

Rated 4.7 on Google and Trustpilot, DesignRush Agency Directory is a reliable resource for finding custom software development companies in London. We owe this to our executive selection team, which follows a strict screening process when featuring agencies on the platform, assessing key performance indicators, like portfolio, client reviews, and industry reputation.

Learn more about DesignRush Agency Ranking Methodology.

Sources

DesignRush sustains a directory of over 30,000 agencies categorized by service category, location, expertise, and reviews. We build our database in two ways:

  • Our dedicated team of agency experts actively searches the web for top-performing companies. We then pull information from their websites, online presence, and client testimonials to verify their status and qualifications prior to listing.
  • The agencies listed get notified of their profiles on the website and they can choose to claim it or not, which suggests their availability for more collaborations.

Agencies can also reach out to DesignRush and must go through the verification process prior to being listed.

About The Author and Expert Reviewer
Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her diverse background in marketing, publishing, and museum curation has enhanced her writing and research abilities. This unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.
Sergio Oliveira is a seasoned software engineer and tech leader with deep expertise in C#, .NET, SQL, Azure, and scalable systems architecture. Holding a BSc in Computer Science and Finance, he pairs technical precision with strategic vision, shaped by years of hands-on professional experience in organizations across Europe and the US. At DesignRush, he oversees the full development lifecycle, from roadmap planning and features prioritization to UX refinement and platform optimization. His work ensures that technical execution aligns seamlessly with the company's goals, growth, and continuous innovation.