Top 100 Software Development Companies in the United Kingdom
June 2023Looking for a top software developer in the United Kingdom?
As the use of mobile and web apps rise, your business’s digital presence becomes even more important. The biggest challenge facing organizations is how they can keep up in the digital world. The best way is to continuously develop up-to-date software that allows your organization to maintain an impactful digital presence.
To assist you in your search for a partner, we’ve compiled this list of the top software development companies in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Software Developers
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1
- $25,000+
- 50 - 249 employees
- London, United Kingdom
Imaginary Cloud is a Web, Mobile and AI Software Development and UX/UI Design Company with offices in the UK, US and Portugal. In the last 11 years they have helped build and scale more than 300 applications, from Start-ups, Scale-ups to Enterprises, winning several global awards. They offer a comprehensive skill set of developers, data scientists and designers coupled with a streamlined agile process.
Clients
- Nokia
- Sage
- Ernst & Young
- BNP Paribas
Industries
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Imaginary Cloud helped a startup company develop a software piece from scratch to support the first stage of their feasibility study.
“Imaginary Cloud’s work exceeded our expectations.”
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2
- $50,000+
- 250 - 999 employees
- London, United Kingdom
One Beyond is a bespoke software development and digital transformation company headquartered in London with additional engineering centers in Madrid (Spain), Budapest & Szeged (Hungary) and Bucharest (Romania). Across international locations, they have a team of more than 350 individuals providing custom software, web and mobile application development and large- scale digital transformation to a diverse clientele.They support large established businesses, nonprofits, government organizations, and VC-funded startups
Clients
- Smith & Nephew
- GAIL's Bakery
- Costa Express
- Pearson
Industries
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One Beyond (formerly DCSL GuideSmiths) developed a cloud-based web app for a contract company. The digital tool lets users define large construction projects and streamlines the procurement process for contractors.
“Whenever there was a problem, they helped us come up with a solution.”
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3
- $10,000+
- 10 - 49 employees
- Watford, United Kingdom
AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.
Clients
- Aspire Customer Communication Services
- Imagine Property Group
- Renteq Highways
- HSM
Industries
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AppDrawn Software Development provided custom software development services for a healthcare firm — they led the setup of the client's CRM system. The team also applied various modifications.
"The personal relationship and responsiveness of their senior team set them apart from other vendors."
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4
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Studio Graphene is a 90+ employee interdisciplinary team of strategists, designers, developers, and product managers. Studio Graphene is headquartered in London with studios in New Delhi, Lisbon, and Geneva. They collaborate with clients — from startups to established businesses — to define the details and specifications of projects, including custom software development, mobile app development, and UX/UI design.
Clients
- Diageo
- Nesta
- Harth
- Mars
Industries
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Studio Graphene developed a mobile application MVP for a mobile app company. The team created a proof of concept and handled the entire project within the client's budget, timeline, and goals.
"They checked the code to see if it suited our product."
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5
- $25,000+
- 1,000 - 9,999 employees
- London, United Kingdom
Headquartered in New York, Vention is a custom software development company with additional offices in Marietta, Ga. and Iselin, N.J. Since 2002, Vention has helped startups and fast-growing tech companies fill in their talent gap and create robust web and mobile solutions that users love. To date, Vention's talent pool includes 3500+ engineers with experience in all of the latest technologies.
Clients
- ClassPass
- ZEFR
- Gain Capital (forex.com)
- Merkle
Industries
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Vention provides staff augmentation services to a SaaS solutions provider. The scope includes software and feature development and maintenance across the product line.
"They are all developers capable of delivering their responsibilities."
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6
- $50,000+
- 50 - 249 employees
- Belfast, United Kingdom
Instil Software is a software engineering firm based in Belfast, Northern Ireland. Founded in 2005, Instil has about 30 employees that work across a variety of industries. They offer custom software development, mobile app development, cloud consulting and software integration, IoT, and web development.
Industries
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Instil Software was hired by a tech company to support their internal development capabilities. They were tasked with developing sets of features across multiple developer tooling products.
"We were impressed with how well they integrated into the internal team's ways of working."
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7
- $50,000+
- 50 - 249 employees
- London, United Kingdom
Founded in 2010, Magora is a 50+ team of web and mobile app designers and developers based in London. Whether it’s B2B or B2C, the firm creates bespoke software that integrates with existing business solutions to enable user-centered interaction and scalable software architecture.
Clients
- Danone
- Unilever
- Toyota
- Royal College of Art
Industries
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Magora Systems has helped with DevOps and worked on the main core system for a mobility solutions company. They’ve also built systems from scratch using PHP, JavaScript, and relational databases hosted on AWS.
“They’re a stable and reliable team.”
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8
- $25,000+
- 2 - 9 employees
- London, United Kingdom
This is Undefined, a branding firm, is located in London, United Kingdom. The small company was founded in 2018. Their team offers branding, digital strategy, ux/ui design, mobile app development, and more.
Industries
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This is Undefined built an online wellbeing platform's web app. After conducting several meetings to discuss the client's needs, the vendor developed the platform's UX and integrated third-party services.
"We were impressed by the depth of their knowledge and skills that enabled them to turn our vision into life."
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9
- $10,000+
- 10 - 49 employees
- Wimborne, United Kingdom
Ballard Chalmers is a software development company based just south of London. Founded in 2005, their team provides custom software development, modernisation and integration, as well as support and IT Managed Services.
Clients
- Apex
- Virgin Atlantic Airways
- Ipes
- Good Energy
Industries
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A telecommunications company has hired Transparity Ballard Chalmers to help them improve their business-critical integrations in order to provide enhanced reporting, monitoring, and alerting.
"They will tell you realistically what you can expect."
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10
- $25,000+
- 50 - 249 employees
- Croydon, United Kingdom
Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.
Clients
- Printed Music Licensing
- Weight Loss Resources
- GC Business Finance
- XTracked Deliveries
Industries
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GoodCore developed a SaaS application for managing briefing programs and events for Fortune 100 companies. The team coded in React and Laravel for creating a web-based application. The application helped automate and streamline the management of corporate events, briefing programs and meetings.
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11
- $25,000+
- 10 - 49 employees
- London, United Kingdom
Core Blue Ltd is a software engineering company based in London with an office in Plymouth, U.K. The company, founded in 2015, has a team of less than ten that provides custom software development, mobile app development, web development, and IoT development services to various companies.
Clients
- Bank of Kigali
- Kuoni
- SAP
- PayPoint
Industries
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CoreBlue supported the development of a volunteering software marketplace for a digital products and services company. They provided a roadmap, created design prototypes in Figma, and built portals in React.
"They took the time to understand the long-term plan for this platform."
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12
- $100,000+
- 50 - 249 employees
- Salford, United Kingdom
Digiryte is a web and mobile app development company based in Manchester, United Kingdom with another UK office in Preston. Since 2015, their team of 28 has been specializing in mobile app development, custom software development, and web development for midmarket clients.
Clients
- NHS
- Channel 4
- Close Brothers
- Hinch Property Management
Industries
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Picking up from a previous vendor, Digiryte developed a mobile app for an app development company. They're responsible for the app's maintenance and operational support.
“Digiryte is always forthcoming with the best way to do things.”
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13
- $25,000+
- 50 - 249 employees
- London, United Kingdom
Synetec is a software development consultancy headquartered in London. They were established in 2009, and have 26 employees. Synetec's range of services includes cloud, CRM, and business intelligence consulting, software integration, web development, custom software development, and more.
Clients
- Argentex
- Genesis
- Jabre Capital Partners
- Zebedee Capital Partners LLP
Industries
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Synetec developed a bespoke CRM system for a cybersecurity company. The team led a discovery phase, then built the system, including customer management and marketing automation features and an accounts API.
"Synetec spent a lot of time understanding our business."
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14
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Influential Software is a software development firm in London, United Kingdom; Maidstone, United Kingdom and Glasgow, United Kingdom. The firm focuses on custom software development, web development, BI & big data consulting & SI, IT managed services, and more and has a midsize team.The firm was launched in 1993.
Clients
- Deloitte
- American Express
- London Stock Exchange
- Pret a Manger
Industries
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Influential Software developed a Sharepoint solution to improve a children's charity organization's data management and delivered an interactive wiki.
"We were very impressed with Influential for the positive meetings and collaboration between our two companies."
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15
- $25,000+
- 10 - 49 employees
- London, United Kingdom
Bit Zesty is a custom software development firm. They provide custom software development, ux/ui design, web development, application management & support, and more and were launched in 2009. Their small team is London, United Kingdom-based.
Clients
- Oxford Medical Simulation
- Trussell Trust (UK Foodbanks)
- Queen's Awards for Enterprise
- HMRC
Industries
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Bit Zesty is developing a healthcare recruitment agency’s software solution. They’ve conducted discovery sessions before building the tool using Ruby on Rails. They’re currently maintaining the app.
"They understand the pulse of the customer and do not hesitate to make recommendations."
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16
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Plug & Play is a UX/UI agency based in London and Surrey. Founded in 2007, they are specialists in user experience and user interface design for software, websites and custom applications. They also have a front-end development service to support clients with the design implementation. Plug & Play work across a number of sectors with their clients ranging from funded startups to large corporations such as Legal & General.
Clients
- WWF
- Mercer
- Legal & General
- Utility Warehouse
Industries
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A land mapping business hired Plug & Play to design their mobile application using Adobe. They assisted the client with narrowing down the scope of the project before presenting and implementing the designs.
“Overall, we had a very positive experience working with them.”
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17
- $100,000+
- 50 - 249 employees
- Salford, United Kingdom
Apadmi is a 140+ member mobile tech group specializing in app development, IoT, and consulting for big data, BI, and SI. Founded in 2009 and based in Manchester, UK, their team excels at helping organizations use technology to achieve a competitive advantage.
Clients
- BBC
- Argos
- Lexus
- Range Rover
Industries
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Apadmi has developed an iOS and Android mobile app for a pizza restaurant where users can order food. The team provides their design, development, and testing expertise. They still develop and release features.
“They’re fully engaged and supportive of the project.”
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18
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Old.St Labs is a software development business based in London. The business, founded in 2020, has a team of more than ten that provides custom software development, mobile app development, UX/UI design, web design & development, and AI services. Old.St Labs serves small and mid-market companies in the advertising & marketing, education, financial services, health care & medical, and legal industries.
Clients
- Kopona
- Brain.Health
- CityMunch
- Altus Investment Management Ltd
Industries
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Old.St Labs developed style guides for a litigation funder. They provided access to Figma and other tools so that we could easily see wireframes and mock-ups.
"They sped things up a lot, particularly toward the end."
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19
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Steadfast Collective is a custom software development company established in 2014. The small team focuses on custom software development, web development, and e-commerce development. The agency is located in London, United Kingdom.
Clients
- National Caravan Council
- Suffolk Libraries
- Elemis
- Love it Stitch It
Industries
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Steadfast Collective designed and developed a website for a theatrical design company. They collaborated with internal brand designers and provided insights on social media advertising and online marketing.
"They listened to us throughout the entire project."
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20
- $50,000+
- 50 - 249 employees
- Bournemouth, United Kingdom
3 SIDED CUBE is an accredited app development and digital product agency headquartered in Bournemouth, England with additional locations in London, Chicago, and Washington, DC. Since their ambitious beginning in 2009, the team of about 38 has collaborated with startups and international organizations, reaching over 87 countries and more than 100 million global downloads. In addition to mobile app development, they also provide UX/UI design services to inspirational organizations.
Clients
- American Red Cross
- UNHCR
- Global Forest Watch
- UNESCO
Industries
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A government organization hired 3 SIDED CUBE to provide mobile app design and development. With the help of an R&D process, they're creating a gaming app to help engage young people in combating climate change.
"They're a passionate, enthusiastic, and young team."
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21
- $1,000+
- 10 - 49 employees
- London, United Kingdom
TH-EY is a development agency in London, England. Founded in 2017, they have about 8 employees that serve clients in a variety of industries. Services include custom software development, web development, and mobile app development.
Clients
- Launchworks
- Own-Kind
- pixable
- First Ascent
Industries
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TH-EY developed an app for a native beauty booking platform on iOS and Google Play. Key features included an easy-to-use UX.
"The project was a pleasure to be part of thanks to the ease of communication and understanding from the team."
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22
- $25,000+
- 2 - 9 employees
- SHEFFIELD, United Kingdom
Inflecto Systems, a software development company, is located in SHEFFIELD, United Kingdom. The firm provides custom software development, mobile app development, and business consulting and has a small team.The firm was founded in 2006.
Industries
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Inflecto Systems has provided custom software development services for a care agency. They’ve built two platforms from scratch to create individual invoices for clients and are currently working on maintenance.
"I honestly can’t say enough good things about them. They’re brilliant."
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23
- $5,000+
- 10 - 49 employees
- Great Baddow, United Kingdom
Objective is a software development firm. The small Great Baddow, United Kingdom-based team provides custom software development, BI & big data consulting & SI, Artificial Intelligence, conversion optimization, and more. The agency was launched in 1987.
Clients
- Epson
- International Institute for Strategic Studies
- Chelmer Housing Association
- TTP - The Technology Partnership
Industries
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Objective supports the development of a new sales order and planning system for a materials and construction services company. They have connected a delivery tablet with the database.
"They have always responded very quickly to our requirements."
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24
- $100,000+
- 50 - 249 employees
- Lurgan, United Kingdom
GCD is a custom software development company. Established in 1999, the team specializes in custom software development, ux/ui design, application management & support, mobile app development, and more. Their small company is Lurgan, United Kingdom-based.
Industries
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GCD has developed a library’s WordPress website and their digital platform in PHP with a CollectionIndex+ API. The two platforms are integrated, allowing users to browse the client’s collection on the frontend.
“GCD is approachable and easy to work with.”
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25
- $10,000+
- 50 - 249 employees
- London, United Kingdom
BN Solutions Inc is a web design agency and user experience company. Their midsize team is located in Sheridan, Wyoming. The company focuses on web design and ux/ui design.Industries
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BN Solutions Inc was hired to augment a web design studio's design capabilities. They began with a thorough briefing process and presented ideas and designs within 1–2 days, allowing some time for feedback.
"The final results are outstanding."
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26
- $10,000+
- 2 - 9 employees
- London, United Kingdom
CM System Designs is a software company based in Dorking, England, and founded in 2017. Their team of more than two offers custom software and web development solutions for small and mid-market firms alike.
Clients
- PizzaExpress
- e-shot
- The BALANCE Saddle Company Ltd
- Franklin Commercial
Industries
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CM System Designs has been hired to revamp the website of a corporate training company, making it more user-friendly, secure, SEO-friendly, and visually pleasing.
"They've been a pleasure to work with."
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27
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Powercode is a web development agency based in Kyiv, Ukraine founded in 2015. They are operated by a team of 66 who are experts in web, mobile app, and custom software development for clients ranging from startups to enterprises. They have experience working in industries such as financial services, business services, and IT. They are also familiar with working with platforms like Amazon, Linux servers, and Azure, among others.
Industries
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Powercode developed websites for a nonprofit organization's customers. They also handled CRM integration into the email system.
"Their open and transparent communication and a keen eye for detail took away all my worries."
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28
- $50,000+
- 10 - 49 employees
- London, United Kingdom
NEVERBLAND is a web development firm. They provide web development, web design, ux/ui design, custom software development, and more and were launched in 2010. Their small team is London, United Kingdom-based.
Clients
- Togetherall
- Lick
- MyTrees
- Bulb
Industries
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NEVERBLAND designed the UI for a tax app that allows users to submit their own tax returns. They used Figma to create the designs and provided web development services as well.
"NEVERBLAND’s communication, design skills, and understanding of how we delivered what needed to be delivered were great."
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29
- $1,000+
- 1,000 - 9,999 employees
- London, United Kingdom
Zerocoder is a London, United Kingdom-based software development firm. The large firm was founded in 2023. Their services include custom software development, web development, mobile app development, web design, and more.Industries
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Zerocoder designed and developed a website for an analytics company. Zerocoder integrated the company's e-commerce platform into the site and trained the client's team to manage the site after it was completed.
"Zerocoder's team was incredibly skilled and innovative."
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30
- $10,000+
- 2 - 9 employees
- London, United Kingdom
56 Degrees is a web development agency with a team of under 10 employees. Based in London and founded in 2010, they provide web development, web design, and e-commerce development services.
Clients
- GiffGaff Studio
- Budweiser
- ZAK
- Hamson Barron Smith
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56 Degrees developed an intranet and an e-learning project for a media agency. The team initially sent a detailed proposal to the client and discussed the final draft and budget for the project.
"All key milestones were hit exactly as promised."
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