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
16 Companies-Rankings updated: August 19, 2026
Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.
Technical partners | Full-service Web development | IT Outsourcing | Blockchain Development Company
Peiko builds custom web, mobile, SaaS, and Web3 software using React, Node.js, and Laravel, with clients including Orion Protocol and Stark electric motorcycles. Its team serves fintech, blockchain, and real estate sectors, making the agency best for businesses needing a reliable product partner...
Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$40/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
12 Projects Listed
Peiko Services
Web Development
Software Development
Web Design
Blockchain
UI/UX Design
Mobile App Development
eCommerce Development
HR Outsourcing
IT Services
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Bitcoin Addition
GS Diamonds
Localaway
Myfinance
Orionprotocol
Quan2um
Revalcoin
Stark
TopUp
Zoobdoo
Data sourced from the agency's DesignRush profile
Peiko Reviews & Testimonials
Sergei Bliznyuk CTO & Co-founder at Kozak Agency
5.0★
Blockchain Review from Sergei Bliznyuk
We've been working with Peiko on a complex blockchain infrastructure project, focused on building a custom Layer-2 scaling solution for our ecosystem. The goal was to reduce network congestion and lower gas fees, and their team has been involved from the initial discovery phase through ongoing development.What stands out most is their ability to turn complex blockchain concepts into practical solutions that align with real business needs. They don't just execute tasks, they actively contribute to shaping the product, helping prioritize features based on long-term goals. Their technical expertise is strong, and theyve delivered solid documentation, a clear backlog, and well-optimized smart contracts.Communication has been smooth overall. At one point, we adjusted the format of updates to get more visibility into the process, and they were quick to adapt and provide more detailed insights without any friction.The project is still ongoing, but the solution is already partially implemented and integrated into our ecosystem. So far, the collaboration has been professional, flexible, and well-managed.
Valeriia Subota Marketing Manager at RegisTeam
5.0★
Blockchain Review from Valeriia Subota
Peiko developed a complex stablecoin management platform for us from the ground up. They successfully took over the entire lifecycle, delivering critical technical documentation and UI/UX design where previous teams had struggled.The expertise of their Business Analysis team was exceptionalthey translated our vision into a robust technical architecture with precision. The high-quality MVP they delivered was instrumental in helping us secure VC funding. Throughout the process, the team maintained seamless communication and provided direct access to the developers, ensuring the project was completed exactly on schedule. A highly reliable choice for any high-stakes blockchain or fintech venture.
Catherine Ilashchuk Marketing Manager at Elit-Web
5.0★
Blockchain Review from Catherine Ilashchuk
If you're building something technical, you know how easy it is for things to go off the rails. Peiko is the first team Ive worked with that actually got ahead of those issues before they started.Instead of just taking our money and starting to code, they forced us to slow down and nail the architecture and logic first. At the time, I just wanted to move fast, but that planning phase is the only reason we haven't had to rebuild half the platform mid-way through. They caught logic gaps we hadn't even considered.The communication is solid, no fluff, just direct updates on where we stand. They also didn't just build whatever I asked for; they pushed back when they thought a feature would bloat the MVP or mess with our timeline. Having a team that actually thinks about your budget and your launch goals like a partner, rather than just a vendor, makes a massive difference. Were heading into our next round of funding with a product that actually works and documentation that proves it.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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...
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 Management Board Member at Modra zavarovalnica, d.d.
5.0★
Mobile App Development Review from Matic Debelak
Workstream 1: research and product strategyWorkstream 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 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
Venture Infrastructure for Scalable Value Creation
SoftTeam is an international IT services and talent-augmentation company operating across locations such as Ukraine, Estonia, Poland, Austria and the United Kingdom. The firm provides models such as IT staff augmentation, dedicated teams and out-staffing to support businesses across industries including...
Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$30/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
10 Projects Listed
SoftTeam Services
IT Services
Staff Augmentation
Software Development
Web Development
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Sport Life
DOBROBUT
FINANCIAL ADVISOR
LUKOIL
SPORTEQUIP
FAST PACK
DOBROGARD
Institute of cell therapy
SUPERLUDI
Data sourced from the agency's DesignRush profile
SoftTeam Reviews & Testimonials
Jeremy DELREY CTO at A-Pharm
5.0★
eCommerce Development Review from Jeremy DELREY
We decided to create an Online shop for selling medicines. So we started with negotiations of the concept and the collection of the requirements. Then team provided us with the technical description of the store and a few mockups of it. After approving everything they start creating a solution.I think that we're about 10-12 people in the team who worked with us. We launched shop and receiving profit from it, I think that's the best outcome.
We decided to develop a mobile application for our customers.Firstly we Googled different companies and then after the communicating with 7 different companies, we decided to work with sst. The main request from our company was to create the best user interface and functionality. Results came immediately, I am as a head of client support saw results more than other departments. Thousand positive feedback from the customers regarding the application and how it works.
Victor R Head of Marketing at LeadHealth
5.0★
Web Development Review from Victor R
We had a problem with a tremendous corporate website, which was very bad and not working. So we decided to create a new corporate website. I have asked a few marketing specialists to give us a contract of good It companies, also find good reviews about SST. As a result, we finally have a fantastic, well-designed, and working website. Also, the traffic of new customers increased by 200%. Also, SST has a suitable methodology for providing the project results in real-time.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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 experiences and develop successful products...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
20 Projects Listed
Zudu Services
Mobile App Development
Web Development
Software Development
UI/UX Design
IoT
Product Design
Digital Services
SEO
PPC
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NHS
Asahi
Weir
Wood
Autins
Aviagen
Scottish Social Services Council
Restructa
LAT Water
University of Dundee
Data sourced from the agency's DesignRush profile
Zudu Reviews & Testimonials
Scott Taylor Training and Development Instructor at Wiltshire and Swindon Fire Authority
5.0★
Web Development Review from Scott Taylor
Zudu provided me with a bespoke app for our fire safety business. It was a simple, clear and straight forward process which was completed quickly.I intend on using them further!
James Cadwaladr Co-Founder at Invive Resourcing
5.0★
Product Design Review from James Cadwaladr
I have been extremely impressed with Zudu’s product development, ongoing and almost immediate support at all times and also genuine understanding and commerciality of both Rik and James which has meant being able to easily translate concepts into product. Excellent UX, UI and Customer support. We look forward to a long and fruitful relationship.
Danny Kelly Harm Reduction Manager at Hillcrest Futures (Previously Cair Scotland)
5.0★
Web Development Review from Danny Kelly
Zudu supported our organisation to develop a web app to benefit local staff working with people who use substances. Zudu went above and beyond to understand the concept by speaking with staff and visiting our service to see where the app would have the most impact. It was clear Zudu were motivated and passionate about what they do and so for us were the obvious choice for this project.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
It's the best app to sell Multichannel on Shopify. Otherwise you would have to pay 2000$ for Shopify PLUS.Support and Features are Great! Thats a company you want to work with together as a B2B seller!Especially thank you Jonas!
James Batson Review from Google
5.0★
James Batson's Review Sourced from Google
Great company with excellent customer service. Helped us solve an issue on our Magento 2 website, highly recommend to anyone looking for Magento plugins or development.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
B-IT is a leading digital solutions agency based in Saudi Arabia, delivering innovative software, web, and business solutions to clients worldwide. Our expert team excels in software development, business consulting, design, e-commerce, SEO, and IT infrastructure support. We combine technical expertise with a...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$10,000 - $25,000
B-IT Services
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Happy Face
Madar al khair
BB Auto Fix
Data sourced from the agency's DesignRush profile
B-IT Reviews & Testimonials
Muhamad Muhamad Review from Google
5.0★
Muhamad Muhamad's Review Sourced from Google
Brother Muhammad Ahmad, may God reward you for your kind treatment and polite speech. Honestly, your work is professional and you deserve our thanks and praise. May God make you happy.
FAIZ KING Review from Google
5.0★
FAIZ KING's Review Sourced from Google
A company that deserves the customer’s trust due to the presence of the team manager, Engineer Muhammad Ahmad, who works hard with everyone and strives with the customer as if the matter is his personally.
shafi qahtani Review from Google
5.0★
shafi qahtani's Review Sourced from Google
To be honest, I have dealt with more than one company, but I have not found anyone who truly deserves to be honored by the company, as Engineer Mohamed Ahmed has good morals and understanding of marketing, because the results have improved.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We design, build, and evolve enterprise-grade digital systems combining thoughtful design, robust architecture, engineering precision, and AI expertise to deliver technology that scales, performs, and lasts...
Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$50/hr
Minimal Budget
$1,000 - $10,000
RONIS Services
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Fusion Forge Tech crafts custom web and mobile solutions that blend sleek design with powerful functionality. We build fast, scalable, and user-friendly platforms tailored to your goals whether you're launching a startup or upgrading an enterprise system...
Location
London, United Kingdom
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Portfolios Count
1 Project Listed
Fusion Forge Tech Services
Web Development
Mobile App Development
Software Development
Digital Marketing
Blockchain
IT Services
Branding
Social Media Marketing
CRO
Web Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Mavrovo Sunny Valley
Property One Coworks Modern Workspaces
Luxor Casino
Ferbey Shop
Red Cross of the Republic of North Macedonia
Creative Wood
BE Pay
Kanaflex
Linic Freight
Bottega Eventi
Data sourced from the agency's DesignRush profile
Fusion Forge Tech Reviews & Testimonials
Creative Wood Owner at Creative Wood
5.0★
Web Development Review from Creative Wood
Working with Fusion Forge Tech has been a seamless and rewarding experience for our team at Creative Wood. From the initial consultation to the final launch of our website, their professionalism, responsiveness, and technical expertise stood out.They took the time to understand our brand, goals, and unique needs as a furniture and interior design company. The team delivered a clean, fast, and mobile-responsive website that truly reflects the quality and craftsmanship were known for. Their attention to detail in both design and functionality exceeded our expectations.What impressed us most was their ability to translate our vision into a practical and elegant digital platform. Throughout the process, communication was clear and efficient, and every request or revision was handled with care and precision.We highly recommend Fusion Forge Tech to any business looking for a reliable, creative, and skilled tech partner. Their work made a significant impact on our online presence, and we look forward to collaborating with them again in the future.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Bespoke software solutions for SMEs to work smarter and win more.
At Red Eagle Tech we provide bespoke software development services for small and medium enterprises. Our solutions help SMEs work smarter, win more and dominate their industry. Friendly London-based team, fixed-price projects, no contract tie-ins...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$165/hr
Minimal Budget
Under $1,000
Red Eagle Tech Services
Software Development
Mobile App Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NHM
SOS Synergy
Jess Ashby Art
Data sourced from the agency's DesignRush profile
Red Eagle Tech Reviews & Testimonials
Veronica Korczak Review from Google
5.0★
Veronica Korczak's Review Sourced from Google
Whilst integrity and veracity are in short supply these days, Red Eagle Tech has it in spades. You can trust these guys. I bought my Microsoft 365 licences from them, and they went out of their way to make the transactions as smooth as possible.
Jeff Stropky Review from Google
5.0★
Jeff Stropky's Review Sourced from Google
Best business I’ve ever dealt with, these guys know their stuff. 10/10 service, I couldn’t be happier.
Ahjaimee Review from Google
5.0★
Ahjaimee's Review Sourced from Google
Working with Kat, Stef, and the whole team at Red Eagle Tech has been a brilliant experience from start to finish. They’ve supported us across multiple digital projects, and every time they’ve delivered solutions that genuinely make our business more efficient while also saving us money.Whenever we bring them a new idea, they approach it with total openness, fresh thinking, and a real understanding of what we’re trying to achieve. They grasp the assignment straight away and always offer smart suggestions that strengthen the final result.Everything with them is transparent, communication, process, and especially pricing. You can tell they know exactly what they’re doing, and their expertise shows in how smoothly each project runs. On top of that, they’re incredibly easy to work with, which makes the whole experience even better.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
VV Design is a UK-based web development agency building high-performance websites engineered for speed, SEO, and scalability. We combine clean design with strong technical architecture, AI integrations, and conversion-focused strategy. Our work is built to grow with your business, not limit it...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$100/hr
Minimal Budget
Under $1,000
Portfolios Count
2 Projects Listed
VV Design Services
Software Development
Web Development
CRM Consulting
eCommerce Development
UI/UX Design
AI Development
Mobile App Development
ERP Consulting
ECM Consulting
Managed Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Market research and digital solutions for B2B organisations and their media clients.
We provide intelligent research and digital solutions for a wide range of media partners in the UK and overseas, helping them to build stronger, deeper relationships with their advertising and exhibitor clients. Through working together, our partners can:- Grow new revenue streams with strong growth...
Location
London, United Kingdom
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Edge Insight Services
Market Research
Software Development
Mobile App Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Trusted Software Engineering Solutions Provider based in Vietnam, With A Global Presence.
As a trusted bespoke software development outsourcing company, we help business organizations tackle challenges of outdated software, inefficient processes, and poor digital presence...
Location
London, United Kingdom
Number of Employees
100 - 249
Minimal Budget
$10,000 - $25,000
Trustify Technology Services
Software Testing
AI Development
Software Development
Mobile App Development
CRM Consulting
IT Services
Staff Augmentation
Cloud Consulting
DevOps Consulting
Web Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Takeda Pharmaceutical Company
KlikDokter
LK Technology
Data sourced from the agency's DesignRush profile
Trustify Technology Reviews & Testimonials
Crystal I'm Review from Google
5.0★
Crystal I'm's Review Sourced from Google
Trustify Technology - Software Development Outsourcing is where I am working, and I am very satisfied. The software development team here is excellent and produces high quality products. The working environment is professional and colleagues support each other. The company also pays special attention to the personal development of employees. I am proud and highly recommend working at Trustify Technology.
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We provide expert UX consulting with 18+ years proven success. Our multi-disciplinary team delivers product strategy, user research, UX design, training and experience testing. We have offices in Toronto, Ottawa, Canada, New York USA and Cambridge, London, UK...
Location
London, United Kingdom
Number of Employees
Under 49
Minimal Budget
$10,000 - $25,000
Akendi Inc. Services
UI/UX Design
Digital Services
Product Design
Staff Augmentation
Market Research
Web Design
Web Development
AI Development
Business Consulting
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts