The NCSC's Assured Sanitisation Service (CAS-S) scheme allowed providers of commercial sanitisation services to be certified to NCSC standards. The scheme closed on 5 January 2026.
In this scheme
What is the CAS-S scheme?
Monday 5th January 2026
The CAS-S Scheme is now closed.
The NCSC has launched the new Sanitisation Service Assurance delivered by the Cyber Resilience Test Facilities (CRTF).
Any CAS-S evaluations begun before 5th January 2026 will complete evaluation under the CAS-S Scheme. Any CAS-S certificates issued under the scheme will remain valid, and be listed on the NCSC Website, until they expire.
The Sanitisation Service Assurance Standard, available from the Scheme documents page, is unchanged.
