About Us

How did we get here?

Our Story: A Veteran Owned Business

In 2011, after 23 years in the military, former helicopter pilot, Stuart Mckean set up Nine23, a leading UK cyber security company in his home office. Having experienced the problem many employees face in using better IT equipment to do their jobs effectively and securely, Stuart felt he could bring new insights to bear on the challenges of cyber security.

Stuart founded Nine23 with a commitment to more effectively enable end-users, in compliance and regulatory industries, who were often reliant on out-dated IT solutions.

Leading Nine23’s focused and skilful team alongside Stuart, former US Army acquisition officer, Ed Jesson, Nine23’s Chairman. Ed brings a depth of experience to Nine23, having founded and run multiple technology businesses for the last three decades. He continues to deliver insights to the team to ensure a balanced and stable future.

Our Leadership Team

Stuart McKean

CEO and Founder

Ed Jesson


Adam Gwinnett

Chief Technology Officer (CTO)

Julie Gordon

Chief Operating Officer (COO)

Stephen Jewell

Chief Growth Officer (CGO)

Our Advisory Board

James Illingworth OBE

Maggie Titmuss MBE

Michael Morgan (FCMA, FCT, MBA)

Alasdair Shannon

Andy Cash

“Your staff are friendly and funny, but most importantly, are highly competent, forward-thinking, go the extra mile and are constantly looking for ways to improve and gives us the service we require.”

Our Certifications and Accreditations

Nine23’s certifications and accreditations show our continuous commitment to industry compliance and regulations.

Security Clearance incl. Non-Police Personnel Vetting (NPPV) Level 3

Security Clearance (SC) is a status granted to individuals allowing them access to classified information (state or organisational secrets) or to restricted areas, after completion of a thorough background check.

All Nine23 operations staff have Security Clearance.

ISO 9001:2015 Quality Management system

ISO 9001:2015 Quality Management system is the international standard that specifies requirements for a quality management system (QMS). Organisations use the standard to demonstrate their ability to consistently provide products and services that meet customer and regulatory requirements.

ISO 9001 compliance is reviewed by an external auditor on an annual basis.

Health and Social Care Network (HSCN)

Nine23 are members of the Living Wage foundation, which campaigns for organisations in the United Kingdom to pay a living wage to their staff.

ISO/IEC 20000-1:2018 Service Management

ISO/IEC 20000-1:2018 Service Management is the global standard that describes the requirements for an information technology service management (ITSM) system to ensure that their ITSM process are aligned both with the needs of the business and international best practice.

ISO 20000 helps organisations benchmark how they deliver managed services, measure service levels and assess their performance.

Cyber Essentials Plus (CE+)

Cyber Essentials Plus (CE+) is a UK Government-backed, industry-supported certification scheme introduced in the UK by the National Cyber Security Centre to help organisations demonstrate operational security against common cyber-attacks. The Cyber Essentials scheme identifies some fundamental technical security controls that an organisation needs to have in place to help defend against Internet-borne threats.

Certification comes in two forms; the first stage is Cyber Essentials which is a self-assessment and the second stage is Cyber Essentials Plus (CE+) which is a more advanced level of certification carried out on the premises by a third-party auditor.

Public Services Network (PSN) Code of Service (CoS)

Nine23 has an established Public Services Network (PSN) Code of Service (CoS) compliance certificate. This enables us to provide services or applications available over the PSN to customers who need it and also publish services for others if required.

Public Sector information carried across the PSN is rated at OFFICIAL under the Government Security Classification Policy (GSC) for which we can design, build and support solutions.

ISO/14001:2015 Environmental Management System

ISO/14001:2015 Environmental Management System is an internationally agreed standard that sets out the requirements for an environmental management system. It helps organizations improve their environmental performance through more efficient use of resources and reduction of waste, gaining a competitive advantage and the trust of stakeholders.

Nine23 are compliant with ISO 14001.

ISO/IEC 27001:2013 Information Security Management System

ISO/IEC 27001:2013 Information Security Management System is the international standard that provides the specification for an information security management system (ISMS). ISO 27001 emphasises the importance of risk management, a formal, top management-driven process which provides the basis for a set of controls that help manage information’s security risks.
By implementing ISO 27001, Nine23 is able to secure information in all its forms, increase resilience to cyber-attacks, adapt to evolving security threats and reduce the costs associated with information security.

ISO 27001 compliance is reviewed by an external auditor on an annual basis.

Collaboration Tools

Nine23 are registered and approved by the following collaboration tools and platforms to meet your compliance needs.

Social Values

Nine23 are committed to social values through supporting charities and organisations.

Our History

Scroll through the years of our highlights.


  • Set up Nine23 in Stuart’s home office


  • Became a limited company



  • Achieved full compliance to operate on the UK Public Services Network (PSN).
  • Achieved and granted Public Services Network (PSN) Code of Service to provide PSN Gateway services.



  • Achieved ISO/IEC 20000-1 the international standard that describes best practices for IT Service Management (ITSM)
  • Competed and selected to deliver the Food Standards Agency (FSA) a PSN gateway service.


  • Celebrated our 10 year anniversary!
  • Won Houses of Parliament Restoration and Renewal Contract


  • Achieved ISO 14001
  • Launched a QuantumCloud service on G-Cloud 13
  • Signed strategic agreements with Arqit, Highside, Appgate
  • Signed a strategic 10 year agreement to support UK Law Enforcement
  • Signed up one of the Big 4 clients