The top UK cyber security companies

The following cyber security companies vary in what services they provide, from what devices or software they cater for, to the kinds of security they offer. Some completely focus on cyber security, and others deal in multiple services, including cyber security.

Looking for the right cyber security provider may depend on the size of your company, or the areas of the company’s system that you feel are the most vulnerable.

With this in mind, let’s take a look at the top UK companies in the space right now.

Ernst & Young (EY)

Professional services company EY offers cyber security advice to companies of all sizes, from start-ups to established multi-national firms.

The company has teams dedicated to cyber security, strategy, risk, compliance and resilience, and can offer guidance into securing a range of tech, including IoT and cloud.

Cyber security services offered by EY include a cyber maturity accelerator, vulnerability assessments and penetration testing.


Clearswift specialises in data loss prevention (DLP) and protecting against leaks.

The firm offers companies various products that focus on this issue, including its Adaptive Data Loss Prevention tool, which aids effective data storage and transfer, and SECURE gateways for email, web and Internet Content Adaption Protocol (ICAP).

10 ways businesses can protect customer data

‘The ICO told businesses that ultimately it is their responsibility to ensure customer data is secure’ Read here


Telecommunications provider BT offer network-based security in the form of behavioural analytics for guidance.

The company has its own cyber security platform, which protects its customers as well as its own infrastructure, as well as Cyber Defence Operations for larger corporations.

Specific specialist services that BT offer include asset oversight, threat identification and neutralisation, and continuity planning in the event of future Distributed Denial of Service (DDoS) attacks.

PricewaterhouseCoopers (PwC)

Professional services provider PwC offers two forms of network cyber security: IT risk identification and security, and cyber threat detection and response.

Services include rapid risk reduction, compromise discovery assessments and crisis management.

PwC adopts both proactive and preventive approaches in order to protect the networks of larger companies.


Defence, security and aerospace firm BAE offers cyber security to commercial and governmental customers.

Its services include fraud detection and prevention, incident response and services relating to regulation compliance.

The company focuses on helping its clients to stop cyber attacks from penetrating their systems in the first place using analytics.

Moving from passive to active analytics for data innovation: the use cases

Information Age explores Kinetica’s active analytics use cases, which is helping accelerate data innovation across industries. Read here


Data protection specialists Sophos deals in antivirus and encryption, as well as securing Wi-Fi and email gateways.

While the company also offers products for cyber at home, the business-orientated services that Sophos offer include endpoint protection, firewalls and protection for the cloud.

Acuity Risk Management

Acuity Risk Management analyses and guides larger corporations in dealing with cyber threats.

Risk management guidance is given via its software platform, STREAM Integrated Risk Manager, which features analytics, as well as dashboards and reports.

The services offered by Acuity through STREAM focus on governance, risk and compliance (GRC).


The services offered by Becrypt focus on endpoint encryption and protection for enterprise IT and the Internet of Things (IoT).

Its clientele range from governmental bodies to businesses and organisations with critical infrastructure.

Also offering USB/port control, Becrypt additionally managed devices on iOS and Android.

55% of businesses don’t encrypt their USB devices

With GDPR’s one-year milestone only less than a month away, businesses are still using unencrypted USB devices to store their data. Read here


SentryBay are a DLP company offer its services to a variety of industries, from financial services to insurance.

Its Data Protection Suite (DPS) is a prominent feature, but the company’s capabilities also include anti-keylogging and mobile security.


Avatar photo

Aaron Hurst

Aaron Hurst is Information Age's senior reporter, providing news and features around the hottest trends across the tech industry.