http://www.legislation.gov.uk/ukpga/2003/20/section/47/notesRail safetyHealth and safety investigationsPoliceRail transportAccidents at workExplanatory Notes to Railways and Transport Safety Act 2003Department for TransportKing's Printer of Acts of Parliament2020-04-20 20 10 July 2003 92 The Police Act 1996 allows the Home Secretary to issue codes of practice for local police authorities and chief constables that relate to the discharge of their functions. Sections 47 and 48 apply these Codes to the Authority and the BTP respectively, but also allow the Secretary of State to issue further codes to allow for the specific circumstances of the BTP. 93 Section 49 replicates provisions in the Police Act 1996. BTP constables, like their Home Office counterparts, may temporarily serve with other police forces. This section allows the Secretary of State to make regulations to ensure that BTP officers on temporary service with another police force are not penalised on their return to the Force, i.e. they can retain promotion or service benefits obtained while on service outside the BTP.