Scan the leading custom software development companies in the UK that build bespoke solutions and offer specialized software services for various verticals. Compare their portfolios, reviews, expertise, budget, team size and more to find the right team for your next project.

We Vetted The Best United Kingdom Software Development Firms For You

8 Companies - Rankings updated: September 06, 2026

We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.

Expertise
Consumer Goods
$50,000 & Up
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  • Infinum

    Solving complex problems with design and technology since 2005.

    We create digital products that streamline operations, grow your audience, and boost business success. Partnering with visionary brands, we transform ideas into impactful solutions using innovative design and technology. Discover how our Software Development expertise can elevate your next project...

    Top Services:

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    24 Projects Listed

    Infinum Services

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Cloud Consulting
    • DevOps Consulting
    • Cybersecurity
    • Staff Augmentation
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Porsche
    • Nike
    • CITI
    • Royal Caribbean
    • Philips
    • Bayer
    • T-Mobile
    • P&G
    • Universal
    • Virgin Mobile
    Data sourced from the agency's DesignRush profile

    Infinum Reviews & Testimonials

    • Matic Debelak
      Matic Debelak Management Board Member at Modra zavarovalnica, d.d.
      5.0 ★

      Mobile App Development Review from Matic Debelak

      Workstream 1: research and product strategy Workstream 2: ETP release Technology : Vendor use Flutter framework, which allows one programming language and one codebase to create two different apps (for iOS and Android). Clearly defined roles and responsibilities, communication is clearly and respectfully, very effective project methodology, trying to understand every time how their activities fits into mission of Modra zavarovalnica, respect each member of team, etc.

    • Claus-Peter Mueller
      Claus-Peter Mueller Managing Director at NLB Lease&GO doo
      5.0 ★

      Software Development Review from Claus-Peter Mueller

      We have engaged Infinum to develop an app that would digitalise our leasing process. From creating the initial offer through the necessary financing application and client identification to the final signature – all the steps required to successfully lease a vehicle or other object can be performed in-app, freeing the users of friction and having to deal with tedious paperwork. The app itself in the background has 30+ integrations, while keeping a seamless and quick to follow process on the front for our users. That application is in production and Infinum is responsible for maintaining it and further improving. After the initial development, we have additionally expanded our scope from vehicles to other equipment. They have also developed a Leasing widget, product which enables quick financing model while purchasing a vehicle online on car seller marketplace pages. At this moment, we are still in partnership with Infinum, and their engagement is mainly focused on localising the app to other countries and supporting us in our further business expansion. The work performed was done in Ruby on Rails and React technology, with support of other services.

    • Anonymous VP of Marketing at SaaS Company
      5.0 ★

      Web Design Review from Anonymous

      Thanks to Infinum's website refresh, the client has seen an almost 100% improvement in their website's conversion rates. The team excels at project management, using the client's own proprietary tool and also Figma very well. Their proficiency in design, delivery, and client relations stands out.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.8 4.8 (9)
    4.8 4.8 (73)

  • 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...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Product Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    18 Projects Listed

    Andersen Services

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Product Design
    • AI Development
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GlobePayroll
    • Samsung
    • Marvel
    • Media Markt
    • IHS Markit
    Data sourced from the agency's DesignRush profile

    Andersen Reviews & Testimonials

    • Kristian Karimo
      Kristian Karimo CEO at OurCnC
      5.0 ★

      HTML5 Review from Kristian Karimo

      Andersen offers skilled project managers who adhere to the approved development plan, ensuring the implementation of all functionalities on time. It generates clear reports, exhibits excellent communication, and is English fluent. The client communicates with Andersen via Skype and Slack and uses Jira as a tracking system. Andersen organizes the processes well and performs correctly. Its team is always punctual and dedicated to the project. Andersen helped in improving the client's product.

    • Markus Bohl
      Markus Bohl Founder & Advisory Board Member at Laya Technologies
      5.0 ★

      Software Development Review from Markus Bohl

      Andersen has a confident project manager who came through professionally and neatly structured the process. Anderson provided the client with individual resources that are a part of a larger, mostly remote team. With these resources, the client builds the initial product and brings it to a sales-ready stage so that it can be used with clients. Andersen helped with UI/UX design, software development, and Python backend development services (Verified via email)

    • Adalin Cheng
      Adalin Cheng Enterprise Solutions Architect at Neo-Bank
      5.0 ★

      Software Development Review from Adalin Cheng

      One of the most impressive things about Andersen Lab is that the entire team [is fully dedicated] to [the] work they are doing. In the Agile process, where decisions are changed rapidly [...], [the] Andersen Lab team used to react patiently to every single change. Although the teams task is mostly implementation of our requirements, they often [go] the extra mile and [are involved] in the ideation process as well. (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (4)

  • DataArt

    Global Software Engineering Firm

    DataArt - Your Partner for Progress in the Digital Age...

    Top Services:

    • Software Development
    • UI/UX Design
    • AI Development
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed

    DataArt Services

    • Software Development
    • UI/UX Design
    • AI Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • InterSport
    • Nasdaq
    • Zesty
    • Doddle
    • Metro Markets
    • PSI
    • Unilever
    • skyscanner
    • Ocado
    • Apax Partners
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    4.8 4.8 (13)

  • Commencis

    Paving the way for a thriving digital society

    Paving the way for a thriving digital society...

    Top Services:

    • Digital Services
    • Mobile App Development
    • Digital Strategy
    • Product Design
    • UI/UX Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    17 Projects Listed

    Commencis Services

    • Digital Services
    • Mobile App Development
    • Digital Strategy
    • Product Design
    • UI/UX Design
    • Web Development
    • Software Development
    • AI Development
    • Cloud Consulting
    • Managed Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Işbank
    • Denizbank
    • Burgan Bank
    • ON Digital
    • ForteBank
    • Riyad Bank
    • Beyon Money
    • Turkcell
    • Pegasus
    • Air Astana
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (16)

  • Future Platforms

    Unlock Future Value Through Technology.

    Future Platforms produces user-focused technical solutions for corporate clients. Our services include strategy, user experience, design, development and quality assurance. We have a strong focus on mobile, but work across the digital landscape designing and developing web and mobile apps, responsive...

    Top Services:

    • Web Design
    • UI/UX Design
    • Software Development
    • Mobile App Development
    • eCommerce Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up

    Future Platforms Services

    • Web Design
    • UI/UX Design
    • Software Development
    • Mobile App Development
    • eCommerce Development
    • Web Development
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Domino's Pizza
    • First Group
    • Wembley
    • EE
    • Premier League
    • The Telegraph
    • Alcove
    • Workspace
    • Doring Kindersley
    • Cancer Research UK
    Data sourced from the agency's DesignRush profile

    Future Platforms Reviews & Testimonials

    • Balinder
      Balinder Review from Google
      5.0 ★

      Balinder's Review Sourced from Google

      Future Platforms are a truly user-focused agency and as a result, create fantastic digital solutions that deliver for the customer and the business.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (8)

  • Sugar Rush

    Creating Mobile Apps That Digitally Transform Business

    Sugar Rush is a Mobile App Agency that provides mobile app development services to clients in the UK, Ireland, Europe, and the US. They have received recognition as the "UK App Agency of the Year" and have won 'App of The Year' awards for three consecutive years in Northern Ireland...

    Top Services:

    • Mobile App Development
    • Web Design
    • Software Development
    • VR/AR
    • Show more
    Location
    Belfast, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Sugar Rush Services

    • Mobile App Development
    • Web Design
    • Software Development
    • VR/AR
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • BUNZL
    • BBC
    • Radio Times
    • TopGear
    • Game of Thrones
    • Stryker
    • Olympus
    • Angling Direct
    Data sourced from the agency's DesignRush profile

    Sugar Rush Reviews & Testimonials

    • Dean Lyttle
      Dean Lyttle Review from Google
      5.0 ★

      Dean Lyttle's Review Sourced from Google

      On behalf of AES Global Ltd - Moving our app development locally was a key focus for us in 2020. After extensive research into local companies and speaking to them all Ali, Danielle and the whole team at Sugar Rush most definitely came out on top. Their company culture and attention to detail was what caught our eye first which was followed closely on their project management skills. We are currently working on our 4th project together and i am still amazed with their dedication to learn our product inside out so they truly understand how it should function with the app and provide new ideas and better flows than what we had before. We have dealt with a large number of different colleagues within Sugar Rush and every single one of them are a credit to the company and provide a brilliant customer experience. Here is to the last 2 year partnership with many more years to follow. Thank you Sugar Rush for your partnership and helping to modernise and optimise our app platform.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (5)

  • NJI Media

    A team with big ideas!

    NJI Media is a reputable interactive agency that specializes in creating stunning designs, web development, multimedia production and effective online communications strategies. We offer these services to various high-profile corporate, political, and non-profit organizations across the United States...

    Top Services:

    • Branding
    • Web Design
    • UI/UX Design
    • Web Development
    • Digital Services
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $50,000 & Up

    NJI Media Services

    • Branding
    • Web Design
    • UI/UX Design
    • Web Development
    • Digital Services
    • Software Development
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Project KOE
    • Facebook
    • CSPAN
    • Hilton Worldwide
    • Institute for Energy Research
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    4.3 4.3 (11)

  • Persistent

    See Beyond, Rise Above.

    Persistent Systems, a renowned global leader in software product development and technology services. Delve into our innovative offerings to stay ahead in the ever-evolving landscape of technology...

    Top Services:

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up

    Persistent Services

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Cybersecurity
    • Managed Services
    • IT Services
    • Big Data Analytics
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GB Bank
    • Qapita
    • Vermont
    Data sourced from the agency's DesignRush profile

    Persistent Reviews & Testimonials

    • Sundeep Patel
      Sundeep Patel Review from Google
      5.0 ★

      Sundeep Patel's Review Sourced from Google

      Persistent Systems Ltd is a global software company that provides innovative software solutions to clients worldwide. The Bhageerath office is one of the company's offices located in Pune, India. As an employee of Persistent Systems Ltd, I have had the opportunity to work at this office and experience its work culture, facilities, and environment. Work Culture: The work culture at Persistent Systems Ltd Bhageerath office is excellent. The company values its employees and provides a supportive environment that encourages creativity, innovation, and collaboration. The office has an open-door policy, and employees are encouraged to share their ideas and opinions freely. The management is approachable and provides ample opportunities for career growth and development. Facilities: The Bhageerath office has excellent facilities that cater to the needs of its employees. The office is spacious and well-equipped with state-of-the-art technology and infrastructure. The office has a modern cafeteria that serves a variety of delicious food and beverages. The office also has a gymnasium, a recreation room, and a meditation center, which are available to employees to use during their free time. Environment: The environment at Persistent Systems Ltd Bhageerath office is conducive to work. The office is located in a peaceful and quiet area, away from the hustle and bustle of the city. The office is surrounded by lush greenery and has a beautiful view of the nearby hills. The office has an eco-friendly policy and encourages its employees to adopt sustainable practices. Employee Experience: As an employee of Persistent Systems Ltd Bhageerath office, my experience has been excellent. The company provides a supportive and inclusive work environment that values its employees. The facilities and amenities provided by the company are top-notch, which makes it a great place to work. The company also provides ample opportunities for career growth and development. Conclusion: In conclusion, Persistent Systems Ltd Bhageerath office is a great place to work. The work culture is excellent, and the company values its employees. The facilities and amenities provided by the company are top-notch, which makes it a comfortable and enjoyable place to work. The environment is conducive to work, which makes it an ideal location for an office. Overall, it is a highly recommended place to work.

    • Harshad N
      Harshad N Review from Google
      5.0 ★

      Harshad N's Review Sourced from Google

      Well known IT company in Pune. Founded and managed by Dr Deshpande. Persistent family known for their social service along with the core business in IT sector..

    • Praveen Soni
      Praveen Soni Review from Google
      5.0 ★

      Praveen Soni's Review Sourced from Google

      One of the best IT company in pune. Location and offices are best. Personally I likes the name of buildings.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (730)

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Software Development Specialties in the United Kingdom

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Why Companies Trust DesignRush

Rated 4.8 on Google and 4.7 on Trustpilot, DesignRush Agency Directory is a reliable resource for finding custom software development companies in the United Kingdom. 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.

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Frequently Asked Questions

What are the core specializations of custom software development companies in the United Kingdom?

The core specializations of custom software development companies in the United Kingdom generally center around web/mobile app development and advanced digital technologies. Their expertise extends to AI-powered products, cloud solutions (especially DevOps), feature enrichment, and cybersecurity.  

Overall, they provide end-to-end digital transformation solutions and engineer custom platforms and systems that drive competitive advantage and business growth across industries. 

How much do software development services cost in the UK?

The cost for software development services in the UK ranges from £25,000 to £120,000 for small businesses. In contrast, large enterprises undertaking extensive digital transformation or building sophisticated, bespoke systems should anticipate costs starting at £80,000 and potentially exceeding £500,000. 

For startups or businesses aiming to validate a concept, the initial cost is considerably lower. A minimum viable product (MVP) or a proof-of-concept generally falls within the £5,000 to £30,000 range. The final price is ultimately determined by the project's complexity, the chosen technology stack, the developers’ experience, and the geographical location of the service provider, which impacts their hourly or daily rates. 

How do I choose the right United Kingdom software development firm?

To choose the right United Kingdom software development firm, begin by evaluating its portfolio and case studies to make sure they have experience in your required technology stack and niche. Inquire about its process and team structure, to make sure they follow an iterative methodology and that the core development team will be dedicated and accessible for regular communication.  

Finally, prioritize a company with good reviews that reflect a track record of robust post-launch support and good collaboration throughout the project. 

Do software development companies provide ongoing support?

Yes, software development companies do provide ongoing support, maintenance, and updates after the product launch. This post-launch service is important for fixing bugs, maintaining security, adapting to changing user needs, and making sure the software remains stable and competitive. 

How do custom software development companies in the United Kingdom handle project revisions?

Custom software development companies in the United Kingdom predominantly handle project revisions through the Agile methodology. This involves breaking the project into short, iterative sprints, allowing the client to provide feedback and request necessary revisions at the end of each cycle.  

This flow is intended to minimize risk and keep the final product aligned with the envisioned concept, rather than waiting until the end for a major change. 

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