Founded | Employees | Headquarters Location | |
|---|---|---|---|
| 1947 | 50K - 100K | London, GB | |
| 2007 | 10000+ | Belfast, GB | |
| - | 10000+ | Cambridge, GB | |
| 1992 | 10000+ | London, GB | |
| - | 10000+ | GB | |
| 2012 | 10000+ | London, GB | |
| 2009 | 10000+ | Cardiff, GB | |
| - | 10000+ | London, GB | |
| 1982 | 1.0K - 5.0K | Slough, Berkshire SL1 4AA, GB | |
| 2013 | 10000+ | London, GB | |
| 1948 | 10000+ | Colchester, GB | |
| 2009 | 10000+ | Gwent, GB | |
| - | 10000+ | Abercynon, GB | |
| 2009 | 10000+ | North Wales, GB | |
| - | 5000-10000 | Ashford, GB | |
| - | 5000-10000 | East Sussex, GB | |
| - | 25 - 100 | London, GB | |
| 1936 | 5000-10000 | Blackpool, GB | |
| 2003 | 5000-10000 | Shrewsbury, GB | |
| 2010 | 5000-10000 | Aylesbury , GB | |
| - | 5000-10000 | Wakefield, GB | |
| 2001 | 5000-10000 | GB | |
| - | 5000-10000 | Birmingham, GB | |
| 1993 | 5000-10000 | London, GB | |
| 1968 | 5000-10000 | London, GB | |
| - | 5000-10000 | Bolton, GB | |
| - | 5000-10000 | Brighton, GB | |
| - | 5000-10000 | Poole, GB | |
| - | 5000-10000 | Birmingham, GB | |
| 1982 | 10000+ | Colchester, GB | |
| 2016 | 5000-10000 | London, GB | |
| - | 5000-10000 | London, GB | |
| - | 5000-10000 | Darlington, GB | |
| 2000 | 5000-10000 | London, GB | |
| 2003 | 5000-10000 | Blackburn, GB | |
| 1988 | 5000-10000 | London, GB | |
| 2000 | 25 - 100 | Stevenage, GB | |
| 2007 | 5000-10000 | Romford, GB | |
| - | 5000-10000 | Wolverhampton, GB | |
| 1983 | 5000-10000 | London, GB | |
| - | 5000-10000 | Bedfordshire, GB | |
| 1906 | 1000-5000 | Liverpool, GB | |
| 1991 | 1000-5000 | Dorchester, GB | |
| - | 25 - 100 | Barnsley, GB | |
| 1932 | 1.0K - 5.0K | London, GB | |
| - | 1000-5000 | Colchester, GB | |
| 1921 | 1000-5000 | London, GB | |
| 1992 | 1.0K - 5.0K | London, GB | |
| 1996 | 1000-5000 | Bristol, GB | |
| 1972 | 1000-5000 | Stafford, GB | |
| - | 1000-5000 | Croydon, GB | |
| 2013 | 1000-5000 | London, GB | |
| 2008 | 1.0K - 5.0K | London, GB | |
| 1973 | 1000-5000 | Basildon, GB | |
| - | 1000-5000 | GB | |
| 1851 | 1.0K - 5.0K | London, GB | |
| 1998 | 1000-5000 | London, GB | |
| - | 1000-5000 | Uxbridge, GB | |
| - | 1000-5000 | Manchester, GB | |
| 1998 | 1000-5000 | Chertsey, GB | |
| 1984 | 1000-5000 | Chester, GB | |
| 1988 | 1000-5000 | United Kingdom, GB | |
| 2001 | 1000-5000 | London, GB | |
| 2006 | 1000-5000 | Woking, GB | |
| 1984 | 1000-5000 | Chesterfield, GB | |
| - | 1000-5000 | Liverpool, GB | |
| 1975 | 1000-5000 | Croydon, GB | |
| 1914 | 1000-5000 | Liverpool, GB | |
| 2010 | 1000-5000 | London, GB | |
| 1992 | 1000-5000 | Bournemouth, GB | |
| 2016 | 1000-5000 | Borehamwood, GB | |
| 1951 | 1000-5000 | Taunton, GB | |
| - | 1000-5000 | London, GB | |
| - | 1000-5000 | Bedford, GB | |
| 1861 | 1000-5000 | Ashton-under-Lyne, GB | |
| 1993 | 1000-5000 | Dartford, GB | |
| 2007 | 1000-5000 | Penrith, GB | |
| 1992 | 1000-5000 | Lincoln, GB | |
| - | 1000-5000 | Coventry, GB | |
| 2002 | 1000-5000 | Chester, GB | |
| - | 1000-5000 | Bath, GB | |
| 1988 | 25 - 100 | How, GB | |
| 2018 | 1000-5000 | Waterlooville, GB | |
| - | 1000-5000 | London, GB | |
| 2006 | 1000-5000 | Pride Park, GB | |
| 2001 | 1000-5000 | Exeter, GB | |
| 1988 | 500-1000 | Weymouth, GB | |
| 1981 | 500-1000 | Kensington, GB | |
| 1974 | 500-1000 | London, GB | |
| 2014 | 500-1000 | Codsall, GB | |
| 2004 | 1.0K - 5.0K | Waterlooville, GB | |
| 2009 | 1.0K - 5.0K | London, GB | |
| 1989 | 500 - 1.0K | Newcastle upon Tyne, GB | |
| 2004 | 500-1000 | London, GB | |
| 2002 | 500-1000 | Telford, GB | |
| 1981 | 1.0K - 5.0K | Ringwood, GB | |
| 1991 | 500-1000 | Norwich, GB | |
| 2010 | 500-1000 | Southport, GB | |
| - | 100-200 | Reading, GB |