Top 100 IT Services Companies in the United Kingdom

Headquartered in London, Opinov8 Technology Services is a technology solutions company that was founded in 2016. With offices in Ukraine and Spain, the team of 88 works with mid-market and small businesses in the financial services, advertising, marketing, gambling, hospitality, IT, and media industries. Opinov8 specializes in custom software development, enterprise app modernization, big data consulting, and clould consulting for clients.

Transputec, a midsize cybersecurity company, is located in Wembley, United Kingdom. They focus on cybersecurity, IT managed services, and custom software development and were launched in 1984.

Magicforce is a CRM consulting and SI company founded in 2019. Their small team is located in London, United Kingdom and L'viv, Ukraine. Their services include CRM consulting and SI.

Silicon Reef are a SharePoint development & Microsoft 365 solutions agency. Founded in 2016, they are located in the United Kingdom with offices in London, Chester, and Bournemouth. They offer a range of services from consultancy, campaign-based web or app development, and front-end creative. They also offer full-blown migration, strategic road-mapping, and full-service development partnerships and partner with medium-sized to enterprise clients. 

Secret Source, a CRM consulting and SI company, was founded in 2015. They are located in Market Deeping, United Kingdom and have a small team. Their services include CRM consulting and SI, marketing strategy, content marketing, digital strategy, and more.

Digital Litmus is a marketing and digital agency based in London. Founded in 2015, their team of around 10 employees specializes in content marketing, digital strategy, and PPC.

Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.

Atech Support Ltd is a cloud-services company based in High Wycombe, United Kingdom. Founded in 2006, their team of around 35 employees provides cloud and IT strategy consulting and IT managed services.

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.

Quema OÜ is a small IT strategy consulting and cloud consulting & SI company. The Tallinn, Estonia-based company was founded in 2022. Their team offers IT strategy consulting and cloud consulting & SI.

Smartdesc is a London-based IT company with a team of fewer than 50 people. Founded in 2011, they offer IT strategy consulting, cloud consulting, and cybersecurity solutions for small and mid-market businesses, primarily non-profit organizations.

Founded in 2017, Lambert Labs is a software development agency that specializes in Python. Their team of fewer than 10 employees is based in London. They also provide web development services and application testing. 

impakt Advisors is a big data company based in New York. Founded in 2016, this company has 10 employees. Services provided by impakt Advisors include IT strategy consulting, big data consulting, and cloud consulting for businesses of all sizes.

Software Solved is an Exeter, United Kingdom-based custom software development company. They specialize in custom software development, BI & big data consulting & SI, cloud consulting & SI, Artificial Intelligence, and more and were launched in 1998.

Headquartered in Leeds, United Kingdom, BJSS is an IT consultancy with offices in London, New York, and Bristol and Manchester, U.K. Since 1993, their team of 750+ has specialized in custom software development, application testing, IT strategy consulting, and more for enterprise-level and midmarket clients. 

Compete366 is a cloud agency founded in London in 1998. With over 10 employees, they specialize in cloud consulting, IT strategy consulting, and cybersecurity solutions for small businesses.

Beyond Analysis is a marketing and advertising firm that has offices in Wimbledon, United Kingdom and Sydney, Australia. Founded in 2007, Beyond Analysis's team of just over 20 employees has over a decade of experience specializing in big data consulting/SI. The firm also offers artificial intelligence and marketing research services to its clients.   

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.

PAV I.T. Services is an IT company in Leeds and Burgess Hill, England. Founded in 1988, they have about 33 employees that serve mostly small-business and midmarket clients in the automotive, legal, and financial sectors. Services include IT managed services, cloud consulting, and IT strategy consulting.

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.

Cloudserve is a cloud solutions provider based in Bournemouth, England with an office in London. Founded in 2009, their team of fewer than 50 professionals offers IT managed services, IT strategy consulting, and cloud consulting & SI services for small and medium-sized businesses. They have experience working in various industries, including hospitality, financial services, and IT.

Gemstone is a big data company. The small Chorleywood, United Kingdom-based agency was founded in 2008. Their team specializes in BI & big data consulting & SI, web development, mobile app development, web design, and more.

VTS Software is software development company located in Manchester, U.K. Since 2007, their small team of around 5 has been specializing in custom software, web, and mobile app development for small and mid-sized businesses alike. They have experience in a variety of industries such as advertising, healthcare, manufacturing, and business services. 

Elsewhen, a midsize software development firm, is located in London, United Kingdom. Their services include custom software development, enterprise app modernization, IT strategy consulting, business consulting, and more.

Exometrics is an AI development company. They are in London, United Kingdom and have a small team. The agency provides Artificial Intelligence, BI & big data consulting & SI, and business consulting.

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.

Big data analytics company flowmoco is based in Newquay, United Kingdom. The small team focuses on BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more and was launched in 2012.

Softwire is a digital design, engineering and support agency, with offices in London, Cambridge and Manchester. Employing over 200 engineers we create bespoke digital software, mobile apps, and offer strategic IT consulting for some of the UK’s leading brands including the BBC, David Lloyd Clubs, Channel 5 and many large Government Departments.