| Harbour Pictures | 1999 | — | 1 |
| History Dreams | — | — | 1 |
| HMV Retail Ltd. | 1921 | — | 1 |
| Hurricane Films | — | — | 1 |
| IMDb | October 17, 1990 | — | 1 |
| Ipso Facto Films | — | — | 1 |
| Itaca Film | — | — | 1 |
| ITV | September 22, 1955 | — | 1 |
| ITV Wales & West | 1968 | — | 1 |
| ITV Yorkshire | 1968 | — | 1 |
| Jeremy Isaac Productions | — | — | 1 |
| Kigali Films | — | — | 1 |
| Liontree Films | February 14, 2025 | — | 1 |
| Locksmith Animation | 2014 | — | 1 |
| London Film Academy | 2001 | — | 1 |
| London Weekend Television | August 2, 1968 | — | 1 |
| Manderlay | — | — | 1 |
| Manga Entertainment | 1987 | — | 1 |
| Manslaughter | — | — | 1 |
| Matador Pictures | — | — | 1 |
| Merseyside Film Production Fund | — | — | 1 |
| Moco Films | — | — | 1 |
| Motion Pictures, S.A. | 1968 | — | 1 |
| New Street Productions | — | — | 1 |
| Oakshire Productions | — | — | 1 |
| Oxford Films | — | — | 1 |
| Palace Complex | 1899 | 1961 | 1 |
| PFP Films | — | — | 1 |
| Pinewood Group | 2001 | — | 1 |
| Potboiler Productions | — | — | 1 |
| Python (Monty) Pictures | 1973 | — | 1 |
| Renaissance Films | — | — | 1 |
| Renegade Films | — | — | 1 |
| Roc Media | — | — | 1 |
| Royal College of Art | 1837 | — | 1 |
| Royal National Theatre | 1963 | — | 1 |
| Runteam Productions | — | — | 1 |
| Scala Productions | — | — | 1 |
| Scottish Documentary Institute | 2004 | — | 1 |
| Scottish Screen | 1997 | — | 1 |
| Scottish Television | August 31, 1957 | — | 1 |
| Screen Scotland | — | — | 1 |
| Shine TV | 2000 | — | 1 |
| Signature Entertainment | 2011 | — | 1 |
| Sky Documentaries | 2020 | — | 1 |
| Smithsonian Channel | — | — | 1 |
| Stanley Donen Films | — | — | 1 |
| Strange Company | 1997 | — | 1 |
| Stronghold | — | — | 1 |
| Survival International | 1969 | — | 1 |
| Syco Entertainment | May 2002 | — | 1 |
| Talkback | 1981 | 2025 | 1 |
| Television Centre | June 29, 1960 | — | 1 |
| Teliesyn | 1982 | 2002 | 1 |
| The British Screen Advisory Council | 1985 | — | 1 |
| The Butcher Boy Film Production | — | — | 1 |
| The Estate of Francis Bacon | — | — | 1 |
| The Guardian | May 5, 1821 | — | 1 |
| The Humm Collection | 2017 | — | 1 |
| The Line | — | — | 1 |
| The Producers Films | — | — | 1 |
| Three Rivers | 1992 | — | 1 |
| Tomboy Films | — | — | 1 |
| Tubedale Films | July 27, 1999 | June 6, 2017 | 1 |
| TwanPix | — | — | 1 |
| Vice Versa Films | July 10, 2002 | February 2011 | 1 |
| Virgin EMI Records | 2013 | — | 1 |
| Virgin Group | February 1970 | — | 1 |
| Warner Bros. Studios, Leavesden | 1994 | — | 1 |
| Warwick Trading Company | — | — | 1 |
| Wheel Productions | — | — | 1 |
| Woodline Films | — | — | 1 |
| Wychwood Pictures | — | — | 1 |
| Zozo | — | — | 1 |
| ABC Television Limited | 1956 | — | — |
| Abingdon Film Unit | 2003 | — | — |
| All3Media | 2003 | July 9, 2026 | — |
| Argonon | 2011 | — | — |
| ATV | September 24, 1955 | — | — |
| Bamforth & Co. | — | — | — |
| Banijay Entertainment | July 9, 2026 | — | — |
| Banijay Kids & Family | February 14, 2011 | — | — |
| Banijay Kids & Family Distribution | — | — | — |
| Banijay UK | 1994 | — | — |
| BigBalls Films | 2005 | — | — |
| Black Camel Pictures | — | — | — |
| Blink | 1985 | — | — |
| Cake Entertainment | 2002 | — | — |
| Eleven | 2006 | — | — |
| Framestore | 1986 | — | — |
| Fresh One Productions | 2001 | — | — |
| Gorgeous Enterprises | 1996 | — | — |
| ITV Anglia | 1959 | — | — |
| Kaos Films | 2001 | — | — |
| Leeds Animation Workshop | 1978 | — | — |
| Lion Television | 1997 | — | — |
| Mammoth Screen | October 24, 2006 | — | — |
| Mayflower Pictures | January 25, 1937 | — | — |
| Oxford Scientific Films | 1968 | — | — |
| Pathé News | 1910 | — | — |