Top 100 Penetration Testing Companies in London
The Best of November 2024
Looking for a top penetration testing company in London?
Having vulnerable security poses a threat to your organization. In an age where data has become some of the most important assets that your company will have, improving security measures is always a must. Penetration testing aims to solve this problem by simulating real-life security breaches without the risk of an actual cyberattack. Also known as ethical hacking, this process helps identify weak spots within your IT network infrastructure by applying methods that real attackers would use.
A penetration testing company can assist you in determining your security vulnerabilities. Doing so will provide you with the information that you need to fortify your cybersecurity. Hiring the right penetration testing company can give you a significant advantage in safekeeping your virtual assets.
To assist you in your search for a partner, we’ve compiled this list of the top penetration testing services in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Penetration Testing Services
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1
- $5,000+
- 1,000 - 9,999 employees
- London, England
Read MoreERRNA is a blockchain company founded in 2015. The small San Jose, California-based team provides blockchain, cybersecurity, marketing strategy, mobile app development, and more.
Industries
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2
- $5,000+
- 50 - 249 employees
- London, England
Read MoreTransputec, 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.
Industries
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3
- $10,000+
- 250 - 999 employees
- London, England
Read MoreA1QA logo is a quality assurance and software testing company founded in 2002. Based in Denver, they have a team of 200+ employees that specialize in application testing and cybersecurity. They primarily serve midmarket clients in the IT and telecommunications industries.
Clients
- Adidas
Industries
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4
- $10,000+
- 250 - 999 employees
- London, England
Read MoreLink Group Global, inc. Is an Austin, Texas-based human resources agency. The midsize company was established in 2015. Their services include HR services, IT managed services, and IT staff augmentation.
Clients
- Danone
Industries
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5
- $5,000+
- 10 - 49 employees
- London, England
Read MoreTexaport 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.
Industries
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6
- Undisclosed
- 50 - 249 employees
- London, England
Read MoreFounded 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.
Industries
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7
- Undisclosed
- 50 - 249 employees
- London, England
Read MoreSagiton is a business-oriented software house located in Wroclaw, Poland. The company was founded in 2010 and now employs a team of 48 people. Sagiton provides custom software development, cybersecurity, mobile app development, IT strategy consulting, marketing strategy, and web design services. Most of their clients are small businesses.
Clients
- TapWinWin
Industries
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8
- $1,000+
- 10 - 49 employees
- London, England
Read MoreQuema 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.
Clients
- Blyp
Industries
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9
- $1,000+
- 10 - 49 employees
- London, England
Read MoreSmartdesc 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.
Clients
- Mind
Industries
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10
- $5,000+
- 10 - 49 employees
- Billericay, England
Read MoreClear 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.
Industries
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11
- $1,000+
- 10 - 49 employees
- London, England
Read MoreCloudserve 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.
Clients
- FJB Hotels
Industries
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12
- $1,000+
- 10 - 49 employees
- Potters Bar, England
Read MoreIT 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.
Industries
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13
- $25,000+
- 10 - 49 employees
- London, England
HEXENS is a London, United Kingdom-based cybersecurity company. The small company was established in 2021. Their team focuses on cybersecurity.Read MoreIndustries
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14
- $25,000+
- 10,000+ employees
- Lyne, England
Read MorePersistent Systems is a software development firm based in Pune, India. Founded in 1990, their team of over 12,000 employees provides custom software development, CRM consulting, and IT strategy services.
Industries
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15
- $250,000+
- 2 - 9 employees
- London, England
SanRa is a Cybersecurity company established in 2022. The small team specializes in Cybersecurity.Read MoreIndustries
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16
- $1,000+
- 10 - 49 employees
- London, England
Read MoreTeceze 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.
Clients
- Outsell, Inc.
Industries
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17
- Undisclosed
- 250 - 999 employees
- London, England
Professional Advantage is a midsize ERP consulting and SI company in North Sydney, Australia and Melbourne, Australia. Their services include ERP consulting and SI and cloud consulting & SI.Read MoreIndustries
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18
- $5,000+
- 10 - 49 employees
- London, England
Cybersecurity company MIK LIONS Security was launched in 2015. In London, England, the team specializes in Cybersecurity.Read MoreIndustries
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19
- Undisclosed
- 1,000 - 9,999 employees
- London, England
Established in 1999, Secureworks is a large Atlanta, Georgia-based Cybersecurity company. Their services include Cybersecurity.Read More -
20
- Undisclosed
- 50 - 249 employees
- London , England
Penguin Commercial Limited is a London , England-based cloud consulting & SI and Cybersecurity company. Their services include cloud consulting & SI and Cybersecurity.Read MoreIndustries
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21
- $1,000+
- 2 - 9 employees
- London, England
Headquartered in London, England, Cynance is a Cybersecurity company. Established in 2019, the team specializes in Cybersecurity.Read MoreIndustries
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22
- Undisclosed
- 250 - 999 employees
- London, England
CHEQ is a midsize Compliance Consulting company established in 2016. Their team provides Compliance Consulting and Cybersecurity.Read More -
23
- Undisclosed
- 250 - 999 employees
- City of London, England
Netwrix Corporation is a Frisco, Texas-based IT strategy consulting company. Established in 2006, the team specializes in IT strategy consulting and Cybersecurity.Read More -
24
- Undisclosed
- 10 - 49 employees
- London, England
Headquartered in London, England, Darklabs is a small Cybersecurity company. Their services include Cybersecurity.Read More -
25
- $1,000+
- 50 - 249 employees
- London, England
Midsize Cybersecurity company Clear Infosec, is based in Jersey City, New Jersey and Toronto, Canada. The team focuses on Cybersecurity and IT strategy consulting.Read MoreIndustries
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26
- Undisclosed
- 250 - 999 employees
- Kent, England
Air IT is an IT strategy consulting company established in 2005. Based in Sandiacre, England and Birmingham, England, the team specializes in IT strategy consulting and cloud consulting & SI.Read More -
27
- $10,000+
- 2 - 9 employees
- London, England
Vuntie Limited is a Cybersecurity company launched in 2019. The small team provides Cybersecurity and Custom Software Development.Read MoreIndustries
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28
- Undisclosed
- 2 - 9 employees
- London, England
Launched in 2015, Cobwebs Technologies is a small Cybersecurity company. Their services include Cybersecurity and Artificial Intelligence.Read More -
29
- Undisclosed
- 50 - 249 employees
- London, England
Launched in 2011, ThreatSpike Labs is a midsize Cybersecurity company based in London, England. Their team specializes in Cybersecurity.Read More -
30
- Undisclosed
- 10 - 49 employees
- City of London, England
ISTARI, a Cybersecurity company, was established in 2020. The team provides Cybersecurity and IT managed services.Read More
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