Top 100 Penetration Testing Companies in the United Kingdom
The Best of December 2025Looking for a top penetration testing company in the United Kingdom?
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 United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Penetration Testing Services
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91Undisclosed10 - 49 employeesManchester, EnglandRemedian IT Solutions Ltd, an IT managed services company, is in oldham, England and Manchester, England. Their services include IT managed services and Digital Strategy.Read More
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92$1,000+10 - 49 employeesGlasgow, ScotlandRedMosquito is an IT managed services company. In Glasgow, Scotland and Edinburgh , Scotland, their small team offers IT managed services and Cybersecurity. The firm was founded in 1999.Read More
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93$5,000+10 - 49 employeesBury St Edmunds, EnglandIT managed services company Green Duck is headquartered in Bury St Edmunds, England. Founded in 2002, the team offers IT managed services and Cybersecurity.Read More
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94$5,000+2 - 9 employeesChalfont Saint Peter, EnglandBAT CODERS is a Cybersecurity company. Launched in 2011, the team offers Cybersecurity and Mobile App Development. The agency is based in Chalfont Saint Peter, England.Read More
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95$1,000+2 - 9 employeesAnlaby, EnglandHeadquartered in Anlaby, England, Pera Prometheus Consulting Ltd is a Cybersecurity and Business Continuity Management company. The team offers Cybersecurity and Business Continuity Management.Read More
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96Undisclosed250 - 999 employeesLondon, EnglandCHEQ is a midsize Compliance Consulting company established in 2016. Their team provides Compliance Consulting and Cybersecurity.Read More
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97Undisclosed250 - 999 employeesCity of London, EnglandNetwrix Corporation is a Frisco, Texas-based IT strategy consulting company. Established in 2006, the team specializes in IT strategy consulting and Cybersecurity.Read More
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98$1,000+10 - 49 employeesLondon, England360 Softtec is a London, England-based IT managed services company. They provide IT managed services and Cybersecurity and were launched in 2003.Read More
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99$1,000+10 - 49 employeesLondon, EnglandIG-Smart Ltd is a Cybersecurity company. Their team is located in London, England. The company specializes in Cybersecurity and IT managed services.Read More
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100Undisclosed10 - 49 employeesOxford, EnglandFounded in 1996, Wiseserve Ltd. Is a Cybersecurity company. Their team provides Cybersecurity and IT managed services.Read More
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101Undisclosed2 - 9 employeesSileby, EnglandBetter IT is an IT strategy consulting company. Their team is headquartered in Sileby, England and Sileby, England and offers IT strategy consulting and cloud consulting & SI.Read More
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102Undisclosed10 - 49 employeesNewcastle upon Tyne, EnglandThe Unite Group is an IT managed services company. Based in Newcastle upon Tyne, England, their small team focuses on IT managed services and Call Center Services. The agency was established in 2011.Read More
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103$1,000+2 - 9 employeesEdinburgh, ScotlandDigital Orchard IT is an IT managed services company. Launched in 2010, the firm focuses on IT managed services and Cybersecurity.Read More
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104Undisclosed10 - 49 employeesBelfast, Northern IrelandITMS Ireland is a small IT managed services and Cybersecurity company located in Belfast, Northern Ireland. Their services include IT managed services and Cybersecurity.Read More
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105Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Darklabs is a small Cybersecurity company. Their services include Cybersecurity.Read More
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106Undisclosed10 - 49 employeesLondon, EnglandJUMPSEC Ltd is a Cybersecurity company founded in 2012. Their team specializes in Cybersecurity.Read More
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107Undisclosed10 - 49 employeesBerkhamsted, EnglandHeadquartered in Berkhamsted, England, Memgraph is a software development company. Founded in 2016, the team provides Custom Software Development and Cybersecurity.Read More
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108$1,000+2 - 9 employeesNew Malden, EnglandVMR Check is a small IT strategy consulting company in New Malden, England and Southall, England. The team specializes in IT strategy consulting and cloud consulting & SI.Read More
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109Undisclosed10 - 49 employeesStretford, EnglandCybersecurity company Aspire IT Services Ltd focuses on Cybersecurity and IT managed services. They are located in Stretford, England.Read More
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110Undisclosed250 - 999 employeesLondon, EnglandExiger is an AI company. They offer Artificial Intelligence and Cybersecurity and were launched in 2013.Read More
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111$1,000+50 - 249 employeesSevenoaks, EnglandAkita is an IT managed services company. The team is headquartered in Sevenoaks, England and London, England, and their services include IT managed services and cloud consulting & SI.Read More
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112$5,000+10 - 49 employeesStevenage, EnglandIT managed services company Primenet was launched in 1998. The firm focuses on IT managed services and Cybersecurity.Read More
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113Undisclosed2 - 9 employeesFrankfurt am Main, GermanyLaunched in 2015, Cobwebs Technologies is a small Cybersecurity company. Their services include Cybersecurity and Artificial Intelligence.Read More
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114Undisclosed50 - 249 employeesLondon, EnglandLaunched in 2011, ThreatSpike Labs is a midsize Cybersecurity company based in London, England. Their team specializes in Cybersecurity.Read More
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115$1,000+Freelancer employeesIstead Rise, EnglandHelpFully IT is an Istead Rise, England-based IT strategy consulting company. They offer IT strategy consulting and cloud consulting & SI.Read More
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116$1,000+10 - 49 employeesLondon, EnglandLaunched in 2019, Techsub.IT is an IT strategy consulting company. The agency offers IT strategy consulting and cloud consulting & SI, and is small.Read More
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117Undisclosed10 - 49 employeesLondon, EnglandSolid Systems is an IT managed services company. Located in Cape Town, South Africa and Johannesburg, South Africa, their team focuses on IT managed services and cloud consulting & SI.Read More
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118$1,000+10 - 49 employeesBaulkham Hills, AustraliaINTELLIWORX Managed IT is a small IT strategy consulting company established in 2011. Their services include IT strategy consulting and IT managed services.Read More
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119Undisclosed10 - 49 employeesBirmingham, EnglandIT managed services company Moremicro was established in 2014. Based in Birmingham, England, the team offers IT managed services and IT strategy consulting.Read More
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120$5,000+10 - 49 employeesLondon, EnglandWeSeeNow is an IT managed services company. Their team is headquartered in London, England and Leeds, England. The firm focuses on IT managed services and IT strategy consulting.Read More
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