Top Cybersecurity Consulting Companies in the United Kingdom
Cyber threats and tightening regulation have made security a board-level issue for U.K. organizations, and specialist firms exist to help. U.K. cybersecurity companies cover the full range, from penetration testing and risk assessments to managed detection and response, incident response, and compliance work against standards like Cyber Essentials, ISO 27001, and U.K. GDPR. Many align to NCSC guidance and serve regulated sectors such as finance, healthcare, and the public sector.
Clutch connects you with cybersecurity companies in the United Kingdom vetted through verified client reviews, so you can compare expertise, credentials, and value before you hire. Use the filters below to narrow by budget, industry, and team size, or explore related directories:
• Top Cybersecurity Consulting Companies
• Cybersecurity Consulting Companies in London
• Cybersecurity Consulting Companies in Edinburgh
• Cybersecurity Consulting Companies in Manchester
• U.K. Cybersecurity Consulting Companies for Financial Services
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Featured
What are Featured Providers?
UndisclosedUndisclosed50 - 249Serves United KingdomServices provided
See all 30 projectsForesite Cybersecurity is a managed cybersecurity company focused on providing comprehensive IT security solutions, including vulnerability assessment, network security, and penetration testing. Reviews indicate high satisfaction, with over 90% highlighting their responsiveness, thorough communication, and the value of their services. Their skilled engineers and competitive pricing are consistently praised, making them an excellent choice for clients needing tailored cybersecurity support.
$25,000+$100 - $149 / hr250 - 999Serves United KingdomServices provided
See all 45 projectsApriorit is a cybersecurity firm specializing in IT security and vulnerability assessments. The company garnered positive feedback for its expertise in niche computing areas and customer-first approach, with 100% of reviewers highlighting effective communication and timely delivery. Their services in data protection and security analysis have been instrumental in enhancing client products.
$1,000+Undisclosed250 - 999Serves United KingdomServices provided
See all 73 projectsTPx is a managed cybersecurity company, offering comprehensive services in IT security, network security, and data protection. With a focus on delivering cost-effective and efficient solutions, TPx has garnered overwhelmingly positive feedback, with 100% of reviewers highlighting their exceptional customer service and responsiveness. Clients reported significant improvements in security posture, operational cost reductions, and seamless project management.
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UndisclosedUndisclosedFreelancerLondon, England
Services provided
Nandini Consulting, a Market Research company, is located in London, England. They specialize in Market Research and IT strategy consulting.
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List of the Top 15 United Kingdom Cybersecurity Consultants
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UndisclosedUndisclosed50 - 249Farnborough, England
Ability to deliver
38.3/40.019.6/20 Reviews9.8/10 Clients & Experience8.9/10 Market PresenceService focus
50% Cybersecurity50% Other -
$50,000+$150 - $199 / hr250 - 999London, England
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Cybersecurity90% Other -
$50,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
38.7/40.019.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
10% Cybersecurity90% Other -
$25,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
39.1/40.019.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Cybersecurity90% Other -
$1,000+$25 - $49 / hr10 - 49Hildenborough, England
Ability to deliver
32.8/40.016.4/20 Reviews8.4/10 Clients & Experience8/10 Market PresenceService focus
55% Cybersecurity45% Other -
$10,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
33.2/40.019.2/20 Reviews6.7/10 Clients & Experience7.3/10 Market PresenceService focus
20% Cybersecurity80% Other -
$5,000+$100 - $149 / hr10 - 49London, England
Ability to deliver
31.2/40.017/20 Reviews8.8/10 Clients & Experience5.3/10 Market PresenceService focus
100% Cybersecurity -
$1,000+Undisclosed10 - 49London, England
Ability to deliver
31.7/40.018.4/20 Reviews6.2/10 Clients & Experience7/10 Market PresenceService focus
55% Cybersecurity45% Other -
$5,000+$100 - $149 / hr50 - 249London, England
Ability to deliver
35.6/40.016.6/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
25% Cybersecurity75% Other -
$1,000+$100 - $149 / hr50 - 249Rochdale, England
Ability to deliver
30.2/40.020/20 Reviews4.4/10 Clients & Experience5.8/10 Market PresenceService focus
65% Cybersecurity35% Other -
$25,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
35.8/40.015.8/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Cybersecurity90% Other -
Undisclosed$150 - $199 / hr250 - 999London, England
Ability to deliver
36.4/40.017.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% Cybersecurity90% Other -
UndisclosedUndisclosed50 - 249London, England
Ability to deliver
32.4/40.016.2/20 Reviews6.5/10 Clients & Experience9.7/10 Market PresenceService focus
35% Cybersecurity65% Other -
$10,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
29.9/40.016.2/20 Reviews7.3/10 Clients & Experience6.4/10 Market PresenceService focus
30% Cybersecurity70% Other -
$5,000+Undisclosed1,000 - 9,999London, England
Ability to deliver
28.5/40.017.2/20 Reviews7.2/10 Clients & Experience4/10 Market PresenceService focus
40% Cybersecurity60% Other -
$5,000+$100 - $149 / hr10 - 49Edinburgh, Scotland
Ability to deliver
35.1/40.016.2/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
15% Cybersecurity85% Other -
$50,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
35.5/40.016/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% Cybersecurity90% Other -
$5,000+< $25 / hr1,000 - 9,999London, England
Ability to deliver
32.9/40.016.2/20 Reviews9.7/10 Clients & Experience7/10 Market PresenceService focus
10% Cybersecurity90% Other -
$5,000+$100 - $149 / hr50 - 249Scunthorpe, England
Ability to deliver
31.8/40.016.6/20 Reviews9.1/10 Clients & Experience6.1/10 Market PresenceService focus
20% Cybersecurity80% Other -
$1,000+$50 - $99 / hr10 - 49Bradford on Avon, England
Ability to deliver
33.8/40.016.2/20 Reviews8.3/10 Clients & Experience9.4/10 Market PresenceService focus
10% Cybersecurity90% Other -
$25,000+$300+ / hr50 - 249Reigate, England
Ability to deliver
33.5/40.014.8/20 Reviews9.2/10 Clients & Experience9.5/10 Market PresenceService focus
10% Cybersecurity90% Other -
$5,000+$50 - $99 / hr10 - 49Clayton-le-Woods, England
Ability to deliver
33.3/40.017/20 Reviews9.2/10 Clients & Experience7.1/10 Market PresenceService focus
10% Cybersecurity90% Other -
$5,000+$25 - $49 / hr250 - 999Manchester, England
Ability to deliver
30/40.016.2/20 Reviews4.7/10 Clients & Experience9.1/10 Market PresenceService focus
15% Cybersecurity85% Other -
$50,000+$50 - $99 / hr1,000 - 9,999Guildford, England
Ability to deliver
30.4/40.015.8/20 Reviews4.7/10 Clients & Experience9.8/10 Market PresenceService focus
10% Cybersecurity90% Other -
Undisclosed$25 - $49 / hr10 - 49London, England
Ability to deliver
27.9/40.017/20 Reviews3/10 Clients & Experience7.9/10 Market PresenceService focus
35% Cybersecurity65% Other -
UndisclosedUndisclosed10 - 49London, England
Ability to deliver
30/40.016.2/20 Reviews8.5/10 Clients & Experience5.3/10 Market PresenceService focus
20% Cybersecurity80% Other -
$50,000+$200 - $300 / hr1,000 - 9,999Leeds, England
Ability to deliver
29.3/40.014.6/20 Reviews8/10 Clients & Experience6.7/10 Market PresenceService focus
10% Cybersecurity90% Other -
$1,000+$100 - $149 / hr50 - 249London, England
Ability to deliver
29.2/40.018.4/20 Reviews2.2/10 Clients & Experience8.6/10 Market PresenceService focus
20% Cybersecurity80% Other -
$1,000+$50 - $99 / hr10 - 49London, England
Ability to deliver
28.9/40.016.2/20 Reviews7.6/10 Clients & Experience5.2/10 Market PresenceService focus
25% Cybersecurity75% Other -
$1,000+$50 - $99 / hr2 - 9Middlesbrough, England
Ability to deliver
22.9/40.016.4/20 Reviews1.4/10 Clients & Experience5.2/10 Market PresenceService focus
100% Cybersecurity
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U.K. Cybersecurity Consulting FAQs
A U.K. cybersecurity company helps you find, fix, and monitor security risks. When hiring these dedicated service providers, clients can expect tailored solutions such as:
- Penetration testing and vulnerability assessments
- Risk and compliance work (Cyber Essentials, ISO 27001, U.K. GDPR)
- Managed detection and response
- Incident response
- Security architecture
- Staff awareness training
Essentially, some focus on one-off assessments while others provide ongoing managed security. Always directly ask the vendor to ensure they cover the range of services you need before enlisting them for your business.
A U.K. provider understands U.K. GDPR and Data Protection Act obligations, NCSC guidance, and certifications like Cyber Essentials that United Kingdom contracts increasingly require. Same-time-zone response also matters for security incidents, where speed is critical, and local providers can meet on-site and sector compliance needs.
Start by defining your project’s specific requirements and objectives to help outline your search criteria. Then, match the firm to your needs, testing, compliance, or managed defense, and look for verified reviews and recognised credentials (such as CREST-accredited testing or relevant ISO experience).
Confirm how they report findings and support remediation, not just identify problems. Shortlist two or three service providers that meet your initial assessment and compare their approach to your risk profile and sector.
Be cautious of firms that sell tools without assessing your actual risk, lack recognised accreditations, deliver findings with no remediation support, or are vague about scope and compliance frameworks. In security, a report that lists problems without helping you fix them offers little real protection.