Top 7 cybersecurity services consultancies in London's City of London

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If you're comparing top cybersecurity services in the City of London, begin with providers that link security work to cloud support, incident response, and daily business systems. This list preserves 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 — well suited to risk, cloud, and response needs
Cyberbrink Cybersecurity Services — well suited to straightforward cybersecurity services
Silent Breach — Best for New York office support
Acrisure Cyber Services — well suited to focused cyber services
DIGIGUARD CYBER SECURITY — a strong fit for a direct cyber security brand presence
Coronet Cyber Security — a strong fit 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

Check whether the firm handles consulting, managed IT, network security, or cloud support.
Watch 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.
Review proof of trust, such as ratings, certifications, and client counts.
We reviewed 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 provides cybersecurity consulting from its New York office at 3 Times Sq. It makes it a solid fit if you want help with security planning, risk assessments, or stronger internal controls.

The 5 rating offers it a clear 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
Runs from 3 Times Sq, New York, NY 10036
Displays a 5 rating
Centers its work on security advisory services

Best for: Businesses that seek cybersecurity consulting in New York City.

Address: 3 Times Sq, New York, NY 10036
Website: 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 security and digital operations.

Its profile lists 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:

Provides cybersecurity services alongside digital marketing
Includes risk, cloud, and response specialties
Shows a 4.9 rating
Serves 2,500+ satisfied clients
Notes $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 places its cybersecurity offer at the center, with the service name covering most of the talking. Its New York address at 442 5th Ave #1574 locates it in a central business corridor.

A 5 score gives to its appeal for organizations that want a dedicated security my review here provider. The direct naming and clear focus help it easy to spot during a fast search.

Pros:

Provides cybersecurity services as its main offering
Operates from 442 5th Ave #1574, New York, NY 10018
Shows a 5 rating
Presents a focused security brand identity

Best for: Companies that want a simple cybersecurity services provider.

Address: 442 5th Ave #1574, New York, NY 10018
Website: https://cyberbrink.com/

4. Silent Breach — Best for New York office support

Silent Breach operates a New York office at 244 Madison Ave, which can be useful 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, adding 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
Carries a 5 rating
Keeps a New York office presence
Uses a cybersecurity-focused brand identity

Best for: Teams that want a New York office for cybersecurity support.

Address: 244 Madison Ave, New York, NY 10016
Website: https://silentbreach.com/

5. Acrisure Cyber Services — Best for focused cyber services

Acrisure Cyber Services centers its work on cyber services and works from a New York base at 55 W 39th St Fl 12. This setup suits 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 reviewing dedicated cyber support in the city.

Pros:

Focuses on cyber services
Works from 55 W 39th St Fl 12, New York, NY 10018
Has a 4.9 rating
Uses a security-first brand name

Best for: Teams that want a cyber services provider with a focused profile.

Address: 55 W 39th St Fl 12, New York, NY 10018
Website: https://acrisurecyber.com/?utm_source=GBP&utm_campaign=local&utm_medium=mainlink

6. DIGIGUARD CYBER SECURITY — Best for a direct cyber security brand presence

DIGIGUARD CYBER SECURITY offers a clear cybersecurity brand and lists a New York office at 757 3rd Ave 20th floor. The name makes the service line easy to spot to prospects sorting through options quickly.

It also shows 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 easy to read.

Pros:

Carries a direct cyber security brand name
Works from 757 3rd Ave 20th floor, New York, NY 10017
Displays a 5 rating
Signals a security-only market position

Best for: Organizations that want a provider with a clear cyber security identity.

Address: 757 3rd Ave 20th floor, New York, NY 10017
Website: http://www.digiguardsecurity.com/

7. Coronet Cyber Security — Best for cyber security brand presence in New York

Coronet Cyber Security completes 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 carries a 5 rating. That mix of location and security focus makes it an simple 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
Serves 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 10013
Website: 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 can cybersecurity services?

Cost depends on the scope, such as advice, managed services, monitoring, or incident response. The size of your setup and the speed of support you need also influence 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 list 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.

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TOP 7 CYBERSECURITY SERVICES CONSULTANCIES IN LONDON'S CITY OF LONDON

Top 7 cybersecurity services consultancies in London's City of London