The British Board of Film Classifications are the state designated censors of all video media sold in the UK.
The BBFC are also the cinema censors, but in this capacity, the ultimate decision rests with local councils. BBFC certificates though are generally accepted by the local authorities.
In recent years the BBFC has done a very good in making their decisions accessible to all.
See
www.bbfc.co.uk
Shopping:
The Grand Duel
1972 Italy / West Germany / France western by Giancarlo Santi set for UK Blu-ray release on 6th May 2019 with BBFC cuts for a horse fall
Cuts and Bans
Shopping:
Irma La Douce
1963 USA comedy romance by Billy Wilder, once cut by the BBFC, just released on UK Blu-ray and DVD
Shopping:
The Grinch
2018 China / USA family animation comedy by Yarrow Cheney and Scott Mosier just released on UK Blu-ray and DVD with BBFC cuts for a U rating