Correct as at 27th April 2024. It may be superseded at any time.
Extract taken: from Vehicle Inspection Portal > VIRMs > In-service certification (WoF and CoF) > Technical bulletins (CoF) > Taximeter compliance
4 Taximeter compliance
Meters are not required in small passenger service vehicles. However, if you do use a meter you must ensure that it is accurate.
From 1 October 2017 meters are not a CoF inspection item and meter certification is not carried out by persons authorised by the Transport Agency.
Page amended 1 October 2017 (see amendment details).