Top 7 cybersecurity services specialists based in the City of London

If you are comparing leading cybersecurity services in the City of London, look at providers that tie security work to cloud support, incident response, and day-to-day business systems. The list keeps the ranking order provided and shows where each company fits so you can sharpen your options quickly. Quick picks: Redpoint Cybersecurity Consulting Services Company NYC New York — well suited to cybersecurity consulting in NYC Sunstone Digital Tech — a strong fit for risk, cloud, and response needs Cyberbrink Cybersecurity Services — a strong fit for straightforward cybersecurity services Silent Breach — a strong fit for New York office support Acrisure Cyber Services — a strong fit for focused cyber services DIGIGUARD CYBER SECURITY — Best for a direct cyber security brand presence Coronet Cyber Security — Best for cyber security brand presence in New York Name Best for Standout fact Redpoint Cybersecurity Consulting Services Company NYC New York Cybersecurity consulting 5 rating Sunstone Digital Tech Risk, cloud, response 2,500+ satisfied clients Cyberbrink Cybersecurity Services General cybersecurity services 5 rating Silent Breach New York office support 5 rating Acrisure Cyber Services Focused cyber services 4.9 rating DIGIGUARD CYBER SECURITY Direct cyber security branding 5 rating Coronet Cyber Security Cyber security brand presence 5 rating How to choose Top cybersecurity services companies in the City of London See whether the firm handles advice, managed IT, network security, or cloud support. Look for response speed if you need help desk, remote support, or incident response. Align the provider to your sector, such as law firms, financial services, or hedge funds. Check proof of trust, such as ratings, certifications, and client counts. We compared 58 businesses from public Google Maps and search data on services, service area and published review data, keeping the 15 that passed screening as of September 2026 1. Redpoint Cybersecurity Consulting Services Company NYC New York — Best for cybersecurity consulting Redpoint Cybersecurity Consulting Services Company NYC New York delivers cybersecurity consulting from its New York office at 3 Times Sq. That makes it a good fit if you want help with security strategy, risk reviews, or better internal controls. The 5 rating provides it a simple trust signal, and the consulting-first setup keeps the service focus easy to compare. If your shortlist centers on advisory work, this firm makes that path simple. Pros: Delivers cybersecurity consulting in NYC Operates from 3 Times Sq, New York, NY 10036 Displays a 5 rating Puts its work on security advisory services Best for: Businesses that want cybersecurity consulting in New York City. Address: 3 Times Sq, New York, NY 10036Website: https://www.redpointcyber.com/cybersecurity-nyc/2. Sunstone Digital Tech — Best for risk, cloud, and response needs Sunstone Digital Tech brings together cybersecurity services with digital marketing, SEO, PPC, web design, branding, reputation management, and AI strategy. That mix fits well if you want a single partner for protection and digital operations. Its profile shows 2,500+ satisfied clients, a 4.9 rating, and $112,180,461+ in revenue generated for clients. The specialties listed include risk, cloud, and response, which keeps the security side to business needs. Pros: Delivers cybersecurity services alongside digital marketing Features risk, cloud, and response specialties Shows a 4.9 rating Supports 2,500+ satisfied clients Shares $112,180,461+ in revenue generated for clients Best for: Teams that prefer security support tied to risk, cloud, and response work. Website: https://sunstonedigitaltech.com/cybersecurity-services/3. Cyberbrink Cybersecurity Services — Best for straightforward cybersecurity services Cyberbrink Cybersecurity Services puts its cybersecurity offer front and center, with the service name handling most of the spotlight. Its New York address at 442 5th Ave #1574 places it in a central business corridor. A 5 rating adds to its appeal for organizations that want a dedicated security provider. The simple naming and clear focus keep it easy to spot during a fast look. Pros: Delivers cybersecurity services as its main offering Operates from 442 5th Ave #1574, New York, NY 10018 Shows a 5 rating Maintains a focused security brand identity Best for: Companies that want a simple cybersecurity services provider. Address: 442 5th Ave #1574, New York, NY 10018Website: https://cyberbrink.com/4. Silent Breach — Best for New York office support Silent Breach operates a New York office at 244 Madison Ave, which may matter if you want a provider with a clear local footprint. The firm is based in a central Manhattan business area that is convenient for city-based organizations. It shows a 5 rating, which gives it another strong trust signal in this list. The short, security-themed name also keeps the cyber focus clear. Pros: Is located from 244 Madison Ave, New York, NY 10016 Holds a 5 rating Has a New York office presence Features a cybersecurity-focused brand identity Best for: Businesses that prefer a Get More Information New York office for cybersecurity support. Address: 244 Madison Ave, New York, NY 10016Website: https://silentbreach.com/5. Acrisure Cyber Services — Best for focused cyber services Acrisure Cyber Services centers its work on cyber services and uses a New York base at 55 W 39th St Fl 12. That setup fits firms that want a provider with a security-specific name and a midtown location. The 4.9 rating keeps it close to the top tier in the list. Its plain service focus makes it a practical option for organizations weighing dedicated cyber support in the city. Pros: Centers on cyber services Is based at 55 W 39th St Fl 12, New York, NY 10018 Displays a 4.9 rating Uses a security-first brand name Best for: Organizations that want a cyber services provider with a focused profile. Address: 55 W 39th St Fl 12, New York, NY 10018Website: https://acrisurecyber.com/?utm_source=GBP&utm_campaign=local&utm_medium=mainlink6. DIGIGUARD CYBER SECURITY — Best for a direct cyber security brand presence DIGIGUARD CYBER SECURITY shows a direct cybersecurity brand and includes a New York office at 757 3rd Ave 20th floor. The name makes the service line clear to prospects scanning options quickly. It also carries a 5 rating, which supports its place in the ranked set. For buyers who want a provider with a direct cyber identity, the positioning is simple to read. Pros: Carries a direct cyber security brand name Is located from 757 3rd Ave 20th floor, New York, NY 10017 Shows a 5 rating Signals a security-only market position Best for: Organizations that want a provider with a plain cyber security identity. Address: 757 3rd Ave 20th floor, New York, NY 10017Website: http://www.digiguardsecurity.com/ 7. Coronet Cyber Security — Best for cyber security brand presence in New York Coronet Cyber Security rounds out the list with a New York address at 462 Broadway, placing it in a well-known downtown corridor. The brand is squarely aimed at cyber security, which keeps the service intent plain. It also holds a 5 rating. That mix of location and security focus makes it an easy entry to compare alongside the other city-based providers here. Pros: Works from 462 Broadway, New York, NY 10013 Carries a 5 rating Presents a clear cyber security brand presence Fits New York organizations looking for a local security provider Best for: Companies that want a New York cyber security brand with a central address. Address: 462 Broadway, New York, NY 10013Website: http://www.coro.net/ Conclusion Choosing between top cybersecurity services comes down to three things, the service fit, the level of local support, and the trust signals that matter to your team. If you need advisory help, a consulting-led firm fits that need better. If you want ongoing coverage, look for managed support, cloud help, network security, or response capabilities. Ratings, office location, and sector fit can help you narrow the field fast.FAQ Is cybersecurity still worth it in 2026? Yes. Businesses still face phishing, account takeover, ransomware, and weak-password attacks, so security support remains part of basic business risk management. Top cybersecurity services help you reduce those risks before they spread through your systems.How much do cybersecurity services? Fees depends on the service scope, such as consulting, managed services, monitoring, or incident response. The size of your system and the speed of support you need also shape the quote, so the right fit usually comes from matching service depth to risk.Is cybersecurity insurance worth it? Cyber insurance can help with financial recovery after a breach, but it usually works best when paired with active controls like backups, access management, and response planning. Think of it as one layer in a larger security plan, not the full answer.How much does it cost to do cyber security? Costs vary widely because cyber security can mean a one-time assessment, ongoing monitoring, or a full managed service plan. Ask for pricing based on the systems you need covered, then compare that scope with the service mix you actually need.What is the 80/20 rule in cybersecurity? It usually means a small number of controls, like strong passwords, MFA, patching, and backups, can reduce a large share of common risk. Many teams start with those basics before adding more layers, then choose services that support that foundation.Next steps Use this guide to compare service scope, support speed, and how closely each provider matches your business type. On a quote call, ask what they cover, how they handle incidents, and what is included in ongoing support. Before you sign, confirm the service terms, the response process, and who will manage your account. Last updated 2026.