UKAS - United Kingdom Accreditation Service - The British national accreditation body recognized by the UK government. UKAS was established in 1995 as a merger of two standardization organizations: National Standards Laboratory Accreditation Scheme (NATLAS) and British Calibration Service (BCS)
An example of a cover that carries the standard on the "ultimate manhole covers" site. From this lid the picture that appears in the general section was taken.