These Regulations revoke and replace the Ministry of Defence Police (Conduct) Regulations 2015 (SI 2015/25) (“the 2015 Conduct Regulations”), the Ministry of Defence Police (Performance) Regulations 2012 (S.I. 2012/808) (“the 2012 Performance Regulations”) and the Ministry of Defence Police (Tribunals) Regulations 2009 (“the 2009 Tribunals Regulations”), subject to transitional provisions (see regulation 6). They make a number of changes, in part to reflect changes made to the equivalent legislation governing police forces in England and Wales (see the Police (Conduct) Regulations 2020 (S.I. 2020/4), the Police (Performance) Regulations 2020 (S.I. 2020/3), and the Police Appeals Tribunal Rules 2020 (S.I. 2020/1)), following changes to the handling of police complaints and police disciplinary matters made by the Policing and Crime Act 2017 (2017 c. 3) (“the 2017 Act”).