The UK government has made changes to the UK (EU) Aircrew Regulations to allow pilots with a UK national licence and current SEP, SLMG, SSES or TMG Class Rating to fly UK registered Part 21 aircraft.
The legislation came into force today, 16 June 2021, and supersedes Exemption ORS4 No 1471 which granted the same privilege on a temporary basis.
Part 21 aircraft are those that were previously managed by the European Union Aviation Safety Agency (EASA) and were considered as EASA types. It covers all certified aircraft including popular piston singles such as Cessna, Piper, Cirrus and Diamond aircraft.
Holders of a licence with a SEP Class Rating are limited to similar privileges of the UK Part-FCL LAPL(A), while flying UK (G) registered Part 21 aeroplanes.
For full details see The Aviation Safety (Amendment) (No.2) Regulations 2021 (SI 2021 No. 614) here.