The National Technical Authority
for Information Assurance

Contact CTAS

Assessment against CTAS is by CESG approved commercial Evaluation Facilities (CTAS Companies).

For CTAS evaluations please contact the CTAS Delivery Office

You can contact CTAS directly by E-mail: or via CESG Enquiries

Contacting CTAS companies


250 Brook Drive, Green Park, Reading, Berkshire, RG2 6UA
POC: Clive Jones
Phone: 01189 650 479

Context Information Security

30 Marsh Wall, Canary Wharf, London, E149TP
POC: Alex Church
Phone: 02075377515

Info-Assure Ltd

A8 building First Floor Room 1003a/b, Cody Technology Park, Ively Road, Farnborough, GU14 0LX
POC: Martin Walsham
Phone: 07760764486

Information Risk Management Ltd (IRM)

4th Floor, Cheltenham House, Clarence Street, Cheltenham, GL50 3JR
POC: Nicholas Watkins
Phone: 01242 225200


Temple Street, Bristol, BS1 6AG
POC: Steve Bates
Phone: 07766 362698

NCC Group plc

The Manchester Technology Centre, Oxford Road, Manchester M1 7ED
POC: Matt Trueman
Mobile: 07816 588 198

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