The Ofcom Broadcasting Code
The Ofcom Broadcasting Code ("the Code"), the most recent version of which took effect on 1 July 2015, covers all programmes broadcast on or after 1 July 2015. The Code Guidance can be found here http://stakeholders.ofcom.org.uk/broadcasting/guidance/programme-guidance/bguidance/.
Programmes broadcast prior to 1 July 2015 are covered by the version of the Code that was in force at the date of broadcast. Previous versions of the Code can be found here http://stakeholders.ofcom.org.uk/broadcasting/broadcast-codes/.