The 10 Best Cybersecurity Companies in the UK

Discover the best cybersecurity companies to protect your business, and learn how to find the top ones that meet your needs.

When it comes to cybersecurity companies in the United Kingdom, there are lots to choose from, However, since their services aren’t all the same or at the same level, you’ll only want to work with the best ones.

Additionally, some cybersecurity firms specialise in certain areas of cybersecurity, while others offer general cyber protection. If you’re looking for the best cybersecurity companies in the UK, you’re sure to find a company that fits your needs from this list. Here are the 10 best cybersecurity companies in the UK:


When it comes to cybersecurity companies in the UK, Microminder leads the pack. The company is based in London but offers services from over 20 countries spread across the globe. 

Microminder is a specialist cybersecurity company, so while it doesn’t offer any other IT services, it does offer the full range of cybersecurity solutions. This includes services and products like risk management, vendor technology, compliance and consulting, and so on.

One of Microminder’s strengths is the fact that it requires its cybersecurity experts to stay up to date with relevant industry qualifications. Additionally, regardless of the size of your company, or the industry you operate in, you’ll find a Microminder plan that’s suitable for you.   

You can learn more by getting started with a consultation right away.  

Sentry Bay

Sentry Bay is a global cybersecurity leader, with offices in London, North Carolina, and Melbourne. The company offers a range of cybersecurity products and solutions, but its focus is on cloud security, helping to provide secure environments for VDI, VPN, thin clients, and Saas applications. 


Sophos is one of the UK’s top cybersecurity companies, with a range of innovative cyber protection solutions. These generally revolve around threat intelligence, prevention, and response, and are largely built on AI and machine learning tools.

Sophos boasts of maintaining a high level of compliance by keeping up with certifications such as JIPAA PCI-DSS CIPA, and ISO/IEC 27001:2013. 


PWC is better known as one of the world’s big 4 accounting firms. However, The firm, which has an office in London, is also of the top cybersecurity firms in the world.

PWC’s clientele typically includes larger companies and governments, whom it serves with managed Chief Information Security Officer (CISO) services. This includes things like threat intelligence, incident management, and enterprise-level privacy and data protection.


EY is another Big 4 accounting firm with a large IT practice. Like PWC, EY also typically serves larger clientele, and these two firms tend to be direct competitors.

EY’s highly-rated cybersecurity solutions include cybersecurity architecture design and implementation, identity and access management, data protection and privacy, strategy, risk, compliance, and more. 


Darktrace doesn’t have as big of a global footprint as firms like PWC, EY, Microminder, and a few others on this list, but still, it’s one of the UK’s largest cybersecurity companies.

From its base in London, the company offers four main products: DarkTrace Prevent, DarkTrace Detect, DarkTrace Respond, and DarkTrace Heal, which are designed to help prevent threats and where breaches occur, to respond effectively.

DarkTrace’s products revolve around its custom AI solutions and are built with an open architecture that makes them easy to integrate with your systems. 


Becrypt is one of the smaller cybersecurity firms on this list–that said, they are among the leading cybersecurity companies in London, with a history of serving several governments and large multinational companies.

The company focuses solely on cybersecurity with a range of products and solutions that include testing, consulting and managed services. Becrypt’s flagship product is the development and delivery of End User Device platforms and security monitoring systems. 

BAE Systems

BAE Systems is one of the world’s largest defence contractors, with numerous global offices including several in London, Glasgow and other major cities in the UK. The company operates a significant cybersecurity portfolio that typically serves governments and large multinational clients.

BAE Systems’ cybersecurity offerings include advisory and incident response capabilities, alongside cross-domain solutions. 


Kaspersky is one of the more recognizable names in the global IT industry, thanks to its highly-rated cybersecurity products and services that include its own antivirus, endpoint protection, online payment protection, VPN, and other cybersecurity solutions. These solutions are designed to serve different business types so the company offers dedicated product lines for small, medium and large-scale clients respectively.


Depending on your business size and needs, McAfee is another of the biggest cybersecurity companies to consider. Originally known for its popular antivirus, the company also services its clients with a suite of cybersecurity products that are focused on endpoint protection and cloud security. McAfee has its corporate headquarters in the USA but maintains a large London office.

What Services Do The Best Cybersecurity Experts Offer?

Digital threats can come in different forms which will be tackled differently, depending on the source of the threat and the channel it targets. To protect your site on all fronts, most cybersecurity companies offer different layers and types of cybersecurity. Here are the most common ones:

Vulnerability assessment

Using available intelligence on known threats, cybersecurity companies can analyse your digital defences to spot weaknesses and areas for improvement.

Penetration testing

Penetration testing takes vulnerability assessment a notch higher by actually simulating the sorts of real-world attacks you should expect to face. 

Incident Response

Vulnerability analysis and penetration testing help to uncover threats and prepare for them. But what about when security breaches have already occurred? Cybersecurity companies can step in help tackle the intrusion and restore your operations.

Network security

Most medium-large scale companies operate some sort of computer network, and these are typically major targets for hackers. Cybersecurity companies can help you set up secure, efficient networks to keep your operations running smoothly.

Data encryption

Sensitive data transmitted over the internet or stored on local servers need to be given the highest levels of protection. Cybersecurity companies can help to keep your data safe by encrypting it and implementing other security measures. 

Managed security services

Some organizations can afford to keep a sizeable IT team staffed with cybersecurity experts. This won’t always be the most efficient way to handle youth cybersecurity. An alternative would be to hire a cybersecurity firm that offers managed security services, where you outsource your cybersecurity to them.

Getting Started With The Top Cybersecurity Companies in the UK

Now that we’ve shared what the top cybersecurity companies in the UK are, and what services to expect from them, the next step will be picking out one of the firms on this list and booking a consultation with the company that will best meet your needs.

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