The Vehicle Certification Agency (VCA) is the designated UK national authority for approving new road vehicles, agricultural tractors, off-road vehicles and components as well as a leading certification body offering management systems certification to ISO 9001, ISO/TS 16949, ISO 14001, Acorn, EMAS, ISO 50001 and OHSAS 18001.

VCA is an executive agency, sponsored by the Department for Transport.