UKAS - the United Kingdom Accreditation Service

ukas logo United Kingdom Accreditation Service
21 - 47 High Street
Middlesex TW13 4UN, UK
Tel: +44(0) 20 8917 8400
Fax: +44(0) 20 8917 8500

As part of the agreement between UKAS and tScheme, the criteria by which tScheme-recognised Assessors are accredited by UKAS are contained in the following document: UKAS Guidance for bodies operating certification of Trust Service Providers seeking approval under tScheme

For further information on UKAS and accreditation in general, please visit their website on