Correct as at 5th May 2024. It may be superseded at any time.
Extract taken: from Vehicle Inspection Portal > VIRMs > Heavy vehicle specialist certification > Occupant features > Seats and seat anchorages
6-3 Seats and seat anchorages
The vehicle must comply with the requirements of the VIRM: In-service certification:
Page amended 1 October 2020 (see amendment details)