Top 100 Penetration Testing Companies in the United Kingdom

Launched in 2001, HW Technology is an IT managed services company. The agency specializes in IT managed services, cybersecurity, IT strategy consulting, and other IT consulting and SI and has a small team.

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.

Texaport is an established and reputable managed service provider with a strong focus on security and customer service excellence. Texaport empowers organizations with comprehensive managed services that combine exceptional customer service, strategic digital transformation, and robust security solutions.

Founded in 2012, Texaport has been providing IT solutions, Consultancy, and Cybersecurity to clients throughout the UK and across the globe.

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.

Evalian is a small cybersecurity and business consulting company. Based in Colden Common, United Kingdom; London, United Kingdom and Worcester, United Kingdom, the firm was founded in 2017. Their team specializes in cybersecurity and business consulting.

Clear Thinking Solutions is a communication and IT solutions provider based in Essex, U.K., with an office in London. The company, founded in 2009, has a team of more than 20 that provides IT managed services, cybersecurity, and IT strategy consulting to small and midmarket companies.

Founded in 2019, BreachLock Inc is a cybersecurity company. They are in New York, New York and have a midsize team. Their services include cybersecurity, IoT development, application testing, compliance consulting, and more.

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.

IT managed services company TWC IT Solutions was established in 2011. They are located in Potters Bar, United Kingdom; Jersey City, New Jersey and Central, Hong Kong and have a small team. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, unified communications consulting & SI, and more.

Founded in 2020, CovertSwarm is a cybersecurity company. The company focuses on cybersecurity and has a small team.

RSK Cyber Security is a cybersecurity company. They are headquartered in Hildenborough, United Kingdom and Dubai, United Arab Emirates and have a small team. Their services include cybersecurity, cloud consulting & SI, web development, mobile app development, and more. The company was established in 2021.

Founded in 2010, NewRedo Ltd. is a software development company headquartered in Leeds, England. Their team of under 10 serves businesses of all sizes in industries such as healthcare, financial services, and government. Services include custom software development, IT managed services, and mobile app development. 

Teceze Ltd is a London-based IT company founded in 2012 with more than 10 employees. They are experts in IT strategy consulting, cybersecurity, and IT managed services for clients that work in the industries of business services, consumer products, and more.

Based in London, United Kingdom, MIK LIONS is a small cybersecurity company. Established in 2015, the team focuses on cybersecurity.

Sencode Cyber SEcurity is a cybersecurity company. Their small team is headquartered in Middlesbrough, United Kingdom. Their services include cybersecurity. The agency was launched in 2019.

Precursor Security is a cybersecurity company in Leeds, United Kingdom. Launched in 2018, the small team focuses on cybersecurity.

Based in Royal Leamington Spa, United Kingdom, Hacker On Rent is a cybersecurity company. The small team specializes in cybersecurity and was established in 2018.

Cynance, a cybersecurity company, was founded in 2019. The small team focuses on cybersecurity. The firm is in London, United Kingdom.

Armor is a cybersecurity company. Their midsize team is in Richardson, Texas and Slough, United Kingdom. The agency offers cybersecurity.

Nimbus is a small Belfast, United Kingdom-based IT managed services and cybersecurity company. Launched in 2010, the team specializes in IT managed services and cybersecurity.

ITMS Ireland is a small IT managed services and cybersecurity company located in Belfast, United Kingdom. Their services include IT managed services and cybersecurity.

Darklabs is a cybersecurity company launched in 2016. The company specializes in cybersecurity and has a small team. The company is based in London, United Kingdom.

IT strategy consulting company Air IT was established in 2005. Their midsize team is located in Sandiacre, United Kingdom. Their services include IT strategy consulting, cloud consulting & SI, cybersecurity, and IT managed services.

Vuntie Limited, a cybersecurity company, was founded in 2019. Based in London, United Kingdom, their small team focuses on cybersecurity, custom software development, BI & big data consulting & SI, IoT development, and more.

Cloud consulting & SI and cybersecurity company Vertical Structure is located in Belfast, United Kingdom. The small team offers cloud consulting & SI and cybersecurity and was founded in 2006.

ThreatSpike Labs, a midsize cybersecurity company, is in London, United Kingdom. Established in 2011, the team specializes in cybersecurity.

Based in London, United Kingdom, Cykube is a cybersecurity and blockchain company. The small firm was established in 2018. Their team provides cybersecurity and blockchain.

Ripjar, an AI company, is in Gloucestershire, United Kingdom. The midsize agency was established in 2012. Their team focuses on Artificial Intelligence, BI & big data consulting & SI, and cybersecurity.

Launched in 2015, DigitalXRAID is a midsize cloud consulting & SI and cybersecurity company. Their services include cloud consulting & SI and cybersecurity. The agency is headquartered in Doncaster, United Kingdom.