Top 100 IT Services Companies in the United Kingdom

Sify Digital Services Ltd is an IT staff augmentation company launched in 1995. They are in Chennai, India and London, United Kingdom and have a large team. Their services include IT staff augmentation, IT managed services, cloud consulting & SI, application management & support, and more.

Navisite is a large Andover, Massachusetts-based cloud consulting & SI company. Founded in 1997, the team focuses on cloud consulting & SI, IT managed services, IT strategy consulting, and ERP consulting and SI.

CloudEQ, an IT strategy consulting company, is in Novi, Michigan; El Segundo, California; Chicago, Illinois and Atlanta, Georgia. Launched in 2019, the midsize team provides IT strategy consulting, cloud consulting & SI, IT managed services, mobile app development, and more.

Based in Karachi, Pakistan; Elmont, New York and London, United Kingdom, Envision International is a SEO agency. The small team offers search engine optimization, pay per click, IT strategy consulting, web development, and more and was established in 2015.

Testinium is a software testing company based in Istanbul with an office in Den Haag, Netherlands. The company, founded in 2009, has more than around 300 employees and provides application testing, AI, business consulting, and custom software development services. Testinium serves enterprise and mid-market companies in various industries.

In Dhaka, Bangladesh, Brain Station 23 Limited is a custom software development firm. They provide custom software development, AR/VR development, web development, cloud consulting & SI, and more and were established in 2006.

Rishabh Software is a software development firm headquartered in San Jose, Calif., with additional offices in Harrow, U.K., and Vadodara, India. It was founded in 2000 and has more than 700 employees. They specialize in web development, enterprise app modernization, and custom software development. The team mainly works with small business and midmarket clients in the financial services, retail, and education industries.

Prolifics is a digital consulting and solutions company based in Calabasas, Calif., with offices in Hyderabad, India; Reading, UK; Hamburg, Germany; New York; and London. The company, founded in 1978, has more than a thousand employees and provides ECM consulting and SI; productivity, collaboration, and UC consulting and SI; and other IT consulting and SI services to various companies. 

Midsize marketing strategy company Wunderman Thompson MAP, is in København, Denmark; Bangkok, Thailand; Barcelona, Spain and Lisboa, Portugal. The team focuses on marketing strategy, social media marketing, search engine optimization, CRM consulting and SI, and more.

Worksoft is a application testing company located in Addison, Texas; City of London, United Kingdom and München, Germany. Established in 1998, the midsize team specializes in application testing, IT strategy consulting, and IT managed services.

CRM consulting and SI and ERP consulting and SI company Flintfox International was founded in 1987. Their midsize team is headquartered in North Harbour, New Zealand; Las Vegas, Nevada; Toronto, Canada and Bishop’s Stortford, United Kingdom and offers CRM consulting and SI and ERP consulting and SI.

Digital strategy company Toexa Inc. Was established in 2017. They are in Cleveland, Ohio; Noida, India; Toronto, Canada and London, United Kingdom and have a midsize team. Their services include digital strategy, mobile app development, web design, CRM consulting and SI, and more.

Headquartered in Addison, Texas; Bengaluru, India; Hyderabad, India and Gurugram, India, Accolite Digital is a cloud consulting & SI company. The large team offers cloud consulting & SI, cybersecurity, application testing, enterprise app modernization, and more and was established in 2007.

BilgeAdam Technologies is a large IT staff augmentation company. Founded in 1997, the team focuses on IT staff augmentation, custom software development, enterprise app modernization, application management & support, and more. The agency is located in İstanbul, Turkey; London, United Kingdom; Den Haag, Netherlands and Ankara, Turkey.

Insight Global, a HR agency, was established in 2001. Headquartered in Atlanta, Georgia; Birmingham, Alabama; Huntsville, Alabama and Phoenix, Arizona, their large team provides HR services.

MyData-TRUST is a cybersecurity company. They specialize in cybersecurity, compliance consulting, corporate training & coaching, and internet & technology law and were founded in 2017. Their midsize team is Mons, Belgium-based.

Brierley, a marketing strategy company, was founded in 1985. The midsize team offers marketing strategy, CRM consulting and SI, market research, mobile & app marketing, and more. The company is in Frisco, Texas; London, United Kingdom and Chiyoda City, Japan.

Genora Infotech is an application development company. The small Kesarvale, India-based agency was launched in 2008. Their team offers mobile app development, ux/ui design, blockchain, cloud consulting & SI, and more.

CI&T (formerly CINQ Technologies) is software development company based in Curitiba, Brazil with additional offices in Brazil and Miami. Founded in 1992, the team of 271 specializes in custom software development, IT staff augmentation, and UX/UI design. They work primarily with enterprise clients in the transportation and financial services industries.

Questers is a software development and IT consulting firm that is based in Sofia, Bulgaria with a second location in London. They have been in business since 2007 and have 45 employees. They focus on serving clients in the IT, advertising, and business services industries. Their expertise lies in the IT staff augmentation, IT managed services, and IT strategy consulting fields.

Cadastra is a digital strategy company based in São Paulo, Brazil; Porto Alegre, Brazil and London, United Kingdom. Founded in 2000, the midsize team provides digital strategy, business consulting, search engine optimization, BI & big data consulting & SI, and more.

N-iX is a global software solutions and engineering services company that helps the world’s leading organizations turn challenges into lasting business value,  operational efficiency,  and revenue growth using modern technology. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies, creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, and more. 

AtSistemas, an IT strategy consulting company, was established in 1994. Their large team is headquartered in Madrid, Spain; Barcelona, Spain; A Coruña, Spain and Jerez De La Frontera, Spain. The company provides IT strategy consulting, mobile app development, and web development.

Online Business Systems is an IT strategy consulting company located in Winnipeg, Canada and Bloomington, Minnesota. The midsize team specializes in IT strategy consulting and business consulting. The firm was established in 1986.

Custom software development company PETADATA was established in 2014. They are headquartered in Fremont, California; Hyderabad, India and City of London, United Kingdom and have a midsize team. PETADATA provides custom software development, back office outsourcing, api development, cloud consulting & SI, and more.

Quadwave Consulting Pvt Ltd, a cloud consulting & SI company, is in London, United Kingdom and Bengaluru, India. They provide cloud consulting & SI, web development, Artificial Intelligence, blockchain, and more and were founded in 2007.

Zone24x7 Inc. is a software and tech company based in San Jose, Calif. Founded in 2003, their team of over 50 experts provides IoT development, custom software development, and cloud consulting services for clients ranging from small startups to large corporations.

FORVIS is a Springfield, Missouri-based accounting company. The large team offers accounting, business consulting, finance & accounting outsourcing (FAO), and cybersecurity. The company was founded in 1923.

Vacuumlabs is a custom software development company. They focus on custom software development, mobile app development, IT staff augmentation, ux/ui design, and more and were launched in 2012. The firm is located in Bratislava, Slovakia; London, United Kingdom; Tallin, Estonia and Prague, Czech Republic.

Techno Facts Solutions Pvt Ltd is a software development company. They are located in Dublin, Ohio; Hyderabad, India and Watford, United Kingdom and have a midsize team that offers custom software development, staffing, web design, CRM consulting and SI, and more. The company was established in 2009.