Cluster Business Members

IdentityFirst Ltd is a Northumberland-based cybersecurity company specialising in identity security solutions for UK organisations. Founded by Mark Ahearne (35 years IT experience, 25 years in Active Directory and identity management), we provide comprehensive identity security assessments across Active Directory, Microsoft Entra ID, AWS IAM, GCP IAM, Okta, and Kubernetes environments.
Launched November 2025, our IdentityHealthCheck platform delivers read-only identity security assessments with AI-powered analysis, covering the hybrid and multi-cloud environments where traditional tools like PingCastle (AD-only) leave critical gaps. We serve UK SMEs, charities, and MSPs with transparent, evidence-based security posture reporting at £250-£2,500 monthly (Founders pricing with up to 50% off) – representing 30-67x cost savings compared to enterprise alternatives.

Penetration Testing UK & Cyber Awareness Training. We help businesses stay ahead of hackers with innovative security solutions.

Celerity UK is a managed IT services and cybersecurity provider delivering infrastructure, cloud, and data protection solutions that help organisations operate securely, efficiently, and with confidence. They combine deep technical expertise with a proactive, service-focused approach to build scalable, resilient IT environments that enhance security, operational resilience, and assured compliance. Trusted across regulated and complex industries, Celerity UK supports businesses in reducing risk, optimising IT investment, and enabling digital transformation.

We are IT, telecoms and cyber-security specialists, keeping over 500 businesses and 50,000 users connected and secure across the UK.

Founded by researchers and thought leaders, Cystel is built on a unique and specialised set of skills in addition to decades of experience at the forefront of the cyber security and artificial intelligence industries.

Powered by scientific research, we offer a radical approach to cyber security (through the lens of hackers) to understand, protect and prepare for cyber attacks effectively and innovatively. We also offer AI solutions to help your organisation leap into Industry 4.0 by modernising your IT infrastructure and unlocking your data capital.

Through our knowledge and expertise, Rule28 is a trusted source of support for organisations to effectively prevent, adapt and respond to, as well as recover and learn from, operational disruptions.

Whether your business is just starting out in business continuity and resilience or has an established programme and looking to continuously improve, Rule28 can offer a breadth of services to support you to start, maintain and improve the resilience of your business.