Founded | Employees | Headquarters Location | |
|---|---|---|---|
| - | 10000+ | London, GB | |
| 1970 | 1.0K - 5.0K | London, GB | |
| 1989 | 1.0K - 5.0K | Brook Green, GB | |
| 2007 | 1.0K - 5.0K | London, GB | |
| 2008 | 1000-5000 | London, GB | |
| 2015 | 1000-5000 | London , GB | |
| 1949 | 500 - 1.0K | London, GB | |
| - | 1000-5000 | London, GB | |
| - | 500-1000 | London, GB | |
| 1991 | 500 - 1.0K | Abingdon, GB | |
| 1994 | 500-1000 | London, GB | |
| - | 500-1000 | London, GB | |
| 1972 | 500-1000 | London, GB | |
| 1946 | 250 - 500 | London, GB | |
| 1983 | 100 - 250 | London, GB | |
| - | 200-500 | Leeds, GB | |
| - | 200-500 | London, GB | |
| 2016 | 100-200 | London , GB | |
| 2018 | 1 - 25 | London, GB | |
| 2015 | 100-200 | London, GB | |
| 2007 | 100-200 | Seaham, GB | |
| 1986 | 100-200 | Bristol, GB | |
| 1971 | 100-200 | London, GB | |
| 2004 | 100-200 | London, GB | |
| 1992 | 100-200 | Vauxhall, GB | |
| 2016 | 100-200 | GB | |
| 2006 | 100-200 | London, GB | |
| 2003 | 100-200 | Farnham, GB | |
| 2005 | 100-200 | London & Lagos (Nigeria), GB | |
| - | 100-200 | London, GB | |
| 2000 | 10-50 | London, GB | |
| 2016 | 10-50 | Exeter, GB | |
| 1998 | 10-50 | London, GB | |
| 1976 | 10-50 | Altrincham, GB | |
| 2017 | 10-50 | London, GB | |
| 2018 | 100-200 | City of London, GB | |
| 1998 | 100 - 250 | Hastings, GB | |
| 2020 | 10-50 | London, GB | |
| 2020 | 10-50 | London, England, GB | |
| - | 10-50 | London, GB | |
| - | 1-10 | London, GB | |
| 2018 | 1-10 | Cambridge, GB | |
| 2021 | 1-10 | London, GB | |
| - | 1000-5000 | London, GB | |
| - | 10000+ | London, GB | |
| - | 10000+ | London, GB | |
| - | 10000+ | London, GB | |
| 2004 | 1 - 25 | London, GB | |
| 1984 | 500 - 1.0K | Uxbridge, GB | |
| 1989 | 500 - 1.0K | City of London, GB | |
| 1998 | 10000+ | London, GB | |
| 2010 | 1000-5000 | London, GB | |
| 1999 | 25 - 100 | 5 Copper Row, GB | |
| 1815 | 100-200 | Durham, GB | |
| 2000 | 25 - 100 | London, GB | |
| 1969 | 1.0K - 5.0K | London, GB | |
| 1973 | 1000-5000 | London, GB | |
| 2008 | 100 - 250 | London, GB | |
| 2010 | 1000-5000 | London, GB | |
| - | 1000-5000 | Birmingham, GB | |
| 1984 | 100 - 250 | London, GB | |
| 1981 | 25 - 100 | Bourne End, GB | |
| 2010 | 1000-5000 | London, GB | |
| 1998 | 500-1000 | London, GB | |
| 1991 | 500 - 1.0K | London, GB | |
| 2017 | 25 - 100 | London, GB | |
| 2004 | 100-200 | London, GB | |
| 2016 | 10-50 | Leatherhead, GB | |
| 2011 | 1 - 25 | London, GB | |
| 1999 | 250 - 500 | Liverpool Street, GB | |
| 2011 | 100-200 | London, GB | |
| 2004 | 1000-5000 | London, GB | |
| 2013 | 1-10 | London, GB | |
| - | 10-50 | Leeds, GB | |
| 1998 | 1000-5000 | London, GB | |
| 2018 | 5000-10000 | London, GB | |
| - | 500-1000 | London, GB | |
| 1913 | 500-1000 | Kingston upon Thames, GB | |
| 1923 | 1.0K - 5.0K | Edinburgh, GB | |
| - | 500-1000 | London, GB | |
| 2005 | 100-200 | London, GB | |
| 2008 | 25 - 100 | London, GB | |
| 2017 | 1 - 25 | London, GB | |
| 1832 | 100-200 | London, GB | |
| - | 1000-5000 | London, GB | |
| 2013 | 10-50 | London, GB | |
| 1998 | 250 - 500 | Norwich, GB | |
| 2014 | 25 - 100 | London, GB | |
| 2010 | 1000-5000 | London, GB | |
| 1979 | 1.0K - 5.0K | London, GB | |
| 1969 | 100-200 | London, GB | |
| 1922 | 1000-5000 | London, GB | |
| 2017 | 10-50 | London, GB | |
| 1996 | 100-200 | London, GB | |
| 2004 | 10-50 | London, GB | |
| 1882 | 500 - 1.0K | London, GB | |
| 1898 | 500-1000 | Croydon, GB | |
| 1986 | 250 - 500 | London, GB | |
| 2012 | 100-200 | Edinburgh, GB |