Correct as at 23rd April 2024. It may be superseded at any time.
Extract taken: from Vehicle Inspection Portal > VIRMs > Entry certification > Technical bulletins > Rear seatbelts as aisle obstructions in passenger service vehicles
21 Rear seatbelts as aisle obstructions in passenger service vehicles
Please see VIRM: In-service certification (WoF and CoF) Technical Bulletin (CoF) 3: Rear seatbelts as aisle obstructions in passenger service vehicles.