Top 100 IT Services Companies in London

AKQA is a multidisciplinary development company with headquarters in San Francisco and offices around the world. The company was founded in 1994 and has grown to a team of over 2,000 that specializes in e-commerce development, mobile app development, CRM consulting & SI, and social media marketing services to companies of all sizes.

Custom software development firm Kainos was launched in 1986. Their midsize team is located in London, United Kingdom; Belfast, United Kingdom; Dublin , Ireland and Boston, Massachusetts. Kainos focuses on custom software development, web development, BI & big data consulting & SI, cloud consulting & SI, and more.

RiskIQ is a cybersecurity company based in San Francisco with a team of just over 150 employees. Established in 2009, they provide cybersecurity, business intelligence, big data consulting, and software integration services to clients in a variety of industries.

Founded in 2007, Lookout is a cybersecurity company. The firm focuses on cybersecurity and has a midsize team.

Founded in 1998, IOActive is a cybersecurity company. Their midsize team is headquartered in Seattle, Washington; London, United Kingdom; Madrid, Spain and , United Arab Emirates and offers cybersecurity.

Guidance Software is a software development firm that has been in operation since 1997. They are headquartered in Pasadena, Calif. and they have additional offices in Slough, U.K., Courbevoie, France, Waukesha, Wis., Rosemont, Ill., Dulles, Va., and New York. They have over 800 employees and they specialize in cybersecurity, IT strategy consulting, and IT staff augmentation. Their clients generally work in consumer services, government, or healthcare.

Cybereason is a cybersecurity company launched in 2012. Their midsize team is in Boston, Massachusetts; London, United Kingdom and Tel-Aviv, Israel. The agency specializes in cybersecurity, BI & big data consulting & SI, and IT strategy consulting.

Digital Guardian, an IT managed services company, was launched in 2003. Based in Waltham, Massachusetts; Reston, Virginia; Santa Clara, California and Lehi, Utah, their midsize team focuses on IT managed services, cybersecurity, and IT strategy consulting.

Veracode is a cybersecurity company based in Burlington, Massachusetts; London, United Kingdom and Boston, . The firm provides cybersecurity, application testing, and IT strategy consulting and has a midsize team.The firm was founded in 2006.

Merkle is a marketing agency headquartered in Columbia, Md., and with over 20 additional offices located throughout the United States, Europe, and Asia. Founded in 1971, Merkle's nearly 4,000 employees specialize in CRM consulting and SI, digital strategy, and social media marketing.

IT managed services company IT Lab was established in 1998. The midsize team specializes in IT managed services, other IT consulting and SI, cloud consulting & SI, unified communications consulting & SI, and more. The agency is headquartered in London, United Kingdom; Woking, United Kingdom; Pendlebury, United Kingdom and Cape Town, South Africa.

Based in Wymbush, United Kingdom and London, United Kingdom, Mirus IT Solutions is an IT managed services company. The midsize team offers IT managed services, other IT consulting and SI, cloud consulting & SI, CRM consulting and SI, and more. The firm was established in 2002.

Conosco is an IT managed services company located in London, United Kingdom. They focus on IT managed services, IT strategy consulting, and cybersecurity and were established in 2002.

Headquartered in London, United Kingdom; Manchester, United Kingdom; Liverpool, United Kingdom and Chicago, Illinois, Amaze is a midsize user experience design company. They specialize in ux/ui design, branding, content marketing, digital strategy, and more and were launched in 1995.

Established in 1988, Telehouse Europe is an IT managed services company. The midsize England, United Kingdom-based team provides IT managed services, IT strategy consulting, and cloud consulting & SI.

IT managed services company Annodata was established in 1988. The midsize team specializes in IT managed services, IT strategy consulting, and cloud consulting & SI. The company is based in Kings Langley, United Kingdom.

Interoute Communications is an IT managed services company. The large London, United Kingdom-based firm was established in 2003. Their team focuses on IT managed services, other IT consulting and SI, and cloud consulting & SI.

MBA IT, a midsize IT managed services company, is located in London, United Kingdom. Launched in 2005, the team specializes in IT managed services, IT strategy consulting, and cloud consulting & SI.

Located in London, United Kingdom, Lanware is an IT managed services company. The midsize company was founded in 1993. Their team provides IT managed services, IT strategy consulting, and cloud consulting & SI.

OCSL is an IT managed services company. The midsize London, United Kingdom-based company was established in 1990. Their services include IT managed services, IT strategy consulting, and cloud consulting & SI.

EBECS is an IT strategy consulting company established in 1999. The midsize team provides IT strategy consulting, ERP consulting and SI, CRM consulting and SI, and business consulting. The firm is located in Chesterfield, United Kingdom and Sheffield, United Kingdom.

Established in 1994, Lanmark is a cloud consulting & SI company. The small London, United Kingdom-based team provides cloud consulting & SI, IT managed services, and IT strategy consulting.

IT managed services company Armadillo was founded in 2001. Their midsize team is based in Hayes, United Kingdom. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, and cybersecurity.

Cloud consulting & SI company Cloudreach was founded in 2009. The company specializes in cloud consulting & SI, IT managed services, and IT strategy consulting and has a midsize team. The company is located in London, United Kingdom and Edinburgh, United Kingdom.

Founded in 2000, Niu Solutions is a midsize IT managed services company. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, and cybersecurity. The agency is headquartered in London , United Kingdom and Bagshot , United Kingdom.

New Signature is an IT managed services company. They focus on IT managed services, IT strategy consulting, and cloud consulting & SI and were established in 2004. Their midsize team is headquartered in London, United Kingdom.

IT managed services company TSG Technology Group was established in 2003. The midsize team focuses on IT managed services, IT strategy consulting, and cloud consulting & SI. The agency is in Newcastle, United Kingdom and London, United Kingdom.

Claranet, an IT managed services company, is located in London, United Kingdom and Barnwood, United Kingdom. The midsize company was founded in 1996. Their services include IT managed services, IT strategy consulting, and cloud consulting & SI.

UKN Group is an IT managed services company established in 1997. Their midsize team is based in Chineham, United Kingdom and London, United Kingdom and focuses on IT managed services, IT strategy consulting, BI & big data consulting & SI, and cloud consulting & SI.

Ultima Business Solutions Ltd., an IT managed services company, is located in Reading, United Kingdom and London, United Kingdom. The midsize agency was launched in 1990. Their services include IT managed services, IT strategy consulting, and cloud consulting & SI.