Top 100 Cybersecurity Companies in the United Kingdom
The Best of July 2026Looking for a top cybersecurity consultant in the United Kingdom?
Check out our list of the best cybersecurity consulting companies to choose a partner that can secure your company. Preventing data breaches should be the top security priority for all businesses in the digital age.
To assist you in your search for a partner, we’ve compiled this list of the top cybersecurity consulting companies in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
Jump to Most Reviewed Companies
List of the Best United Kingdom Cybersecurity Consultants
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121Undisclosed10 - 49 employeesLondon, EnglandBlack Smith Security, a small Cybersecurity company, is in London, England. Their services include Cybersecurity.Read More
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122$5,000+10 - 49 employeesLondon, EnglandEJN Labs, a Cybersecurity company, offer Cybersecurity and AI Consulting. They were founded in 2025.Read More
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123Undisclosed250 - 999 employeesLondon, EnglandBased in London, England, Marshall Info Tech is a midsize IT managed services company. The team specializes in IT managed services and Cybersecurity.Read More
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124$10,000+50 - 249 employeesWallsend, EnglandForfusion is a midsize Wallsend, England-based IT managed services company. Their services include IT managed services and IT strategy consulting.Read More
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125Undisclosed50 - 249 employeesLondon, EnglandIT managed services company TDM Group is in London, England and Staines-upon-Thames, England. The team offers IT managed services and Cybersecurity.Read More
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126Undisclosed2 - 9 employeesSunderland, EnglandLaunched in 2018, CyberWhite Limited is a Cybersecurity company. The agency offers Cybersecurity and IT managed services.Read More
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127Undisclosed10 - 49 employeesBelfast, Northern IrelandSmall Cybersecurity and IT managed services company Nimbus, is located in Belfast, Northern Ireland. Their services include Cybersecurity and IT managed services.Read More
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128Undisclosed10 - 49 employeesLondon, EnglandFounded in 2013, First Response is a Cybersecurity and IT managed services company. The team focuses on Cybersecurity and IT managed services.Read More
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129Undisclosed50 - 249 employeesLondon, EnglandEstablished in 2011, Callsign is an artificial intelligence firm. The team provides Artificial Intelligence and Cybersecurity.Read More
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130Undisclosed250 - 999 employeesOldbury, EnglandEstablished in 1997, A&O IT Group is a Cybersecurity company. The team focuses on Cybersecurity and AI Consulting.Read More
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131$5,000+2 - 9 employeesJarrow, EnglandVanguard Cyber Security Ltd is a small Cybersecurity company headquartered in Jarrow, England. The team focuses on Cybersecurity.Read More
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132$5,000+2 - 9 employeesOldbrook, EnglandGEOPC Ltd is an Oldbrook, England-based Cybersecurity company. Founded in 2023, the team provides Cybersecurity.Read More
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133$5,000+50 - 249 employeesLondon, EnglandLightrove Technology is a midsize Cybersecurity company founded in 2020. Their services include Cybersecurity and IT staff augmentation.Read More
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134$1,000+50 - 249 employeesGloucester, EnglandCloud9 Data Solutions is a Cybersecurity company. Launched in 2018, the company specializes in Cybersecurity and Compliance Consulting.Read More
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135$50,000+2 - 9 employeesLondon, EnglandMonsevo, a Cybersecurity company, provide Cybersecurity. They were launched in 2023.Read More
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136$1,000+1,000 - 9,999 employeesLondon, EnglandIT strategy consulting company Beryl Technologies Ltd is headquartered in London, United Kingdom and Multan, Pakistan. The firm focuses on IT strategy consulting, cybersecurity, and IT managed services and is large.The firm was launched in 2023.Read More
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137Undisclosed2 - 9 employeesWakefield, EnglandHacked Website Fix is a Cybersecurity company. They were established in 2017 and offer Cybersecurity and IT managed services.Read More
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138$1,000+2 - 9 employeesLondon, EnglandCybersecurity company Dreadsec Ltd is headquartered in London, England. The team offers Cybersecurity.Read More
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139$5,000+50 - 249 employeesLondon, EnglandCybersecurity company Cybernoq LTD is headquartered in London, England. Their services include Cybersecurity and IT managed services.Read More
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140$5,000+1,000 - 9,999 employeesLondon, EnglandSigma Software Security, a Compliance Consulting company, is in London, England and Warszawa, Poland. Their services include Compliance Consulting and Cybersecurity.Read More
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141$1,000+2 - 9 employeesLondon, EnglandCybersecurity company AttackIUM is in London, England. They provide Cybersecurity.Read More
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142$5,000+10 - 49 employeesLondon , EnglandBinary Response is a Cybersecurity company. Based in London , England, their team specializes in Cybersecurity.Read More
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143Undisclosed2 - 9 employeesLondon, EnglandCyberstrategix Consulting is a Cybersecurity company. The agency is located in London, England. Their team offers Cybersecurity.Read More
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144$5,000+10 - 49 employeesLondon, EnglandLineal is a small Business Consulting company based in London, England and Hong Kong, Hong Kong. Their services include Business Consulting and Cybersecurity.Read More
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145$25,000+10 - 49 employeesLondon, EnglandSnatchDigital is an IT staff augmentation company. The team focuses on IT staff augmentation and Application Testing and is in London, England and San francisco, California.Read More
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146Undisclosed10 - 49 employeesLondon, EnglandDealDone LTD is a small Cybersecurity company established in 2012. Their team offers Cybersecurity and Blockchain.Read More
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147$1,000+2 - 9 employeesGreenfield, EnglandBased in Greenfield, England, KEEP Information Security Services is a Cybersecurity company. They provide Cybersecurity and IT strategy consulting and were launched in 2014.Read More
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148Undisclosed1,000 - 9,999 employeesBracknell, EnglandIT strategy consulting company Excis Compliance was established in 2001. The team provides IT strategy consulting and cloud consulting & SI and is in Bracknell, England and Navi Mumbai, India.Read More
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149$10,000+10 - 49 employeesLondon, EnglandOTIFYD is a Cybersecurity company in London, England and Dubai, United Arab Emirates. They specialize in Cybersecurity and IT strategy consulting.Read More
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150Undisclosed10 - 49 employeesManchester, EnglandAxiom 360, a small IT managed services and Cybersecurity company, is in Whitby, Canada and Manchester, England. Their services include IT managed services and Cybersecurity.Read More
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