Founded | Employees | Headquarters Location | |
|---|---|---|---|
| 1845 | 10000+ | London, GB | |
| 1966 | 10000+ | Leeds, GB | |
| - | 1000-5000 | London, GB | |
| 1975 | 1.0K - 5.0K | London, GB | |
| 2000 | 500 - 1.0K | London, GB | |
| 1987 | 1.0K - 5.0K | London, GB | |
| 1985 | 1000-5000 | London, GB | |
| 1987 | 100 - 250 | London, GB | |
| 2000 | 250 - 500 | London, GB | |
| 1975 | 250 - 500 | London, GB | |
| 2003 | 500 - 1.0K | London, GB | |
| 2007 | 500 - 1.0K | London, GB | |
| 2009 | 100 - 250 | London, GB | |
| 1982 | 500-1000 | London, GB | |
| 2009 | 500-1000 | London, GB | |
| 1993 | 1 - 25 | Hare Hatch, GB | |
| 2019 | 100-200 | London, GB | |
| 2008 | 1 - 25 | Dubai, GB | |
| 2010 | 25 - 100 | London, GB | |
| 1990 | 200-500 | London, GB | |
| 2001 | 200-500 | London, GB | |
| 1981 | 200-500 | London, GB | |
| 2001 | 25 - 100 | London, GB | |
| 1997 | 25 - 100 | London, GB | |
| 2002 | 200-500 | London , GB | |
| 1988 | 200-500 | London, GB | |
| 1986 | 100 - 250 | London, GB | |
| 1997 | 200-500 | Berkhamsted, GB | |
| 1990 | 200-500 | London, GB | |
| 1991 | 100 - 250 | Cheltenham, GB | |
| 1984 | 200-500 | London, GB | |
| 2008 | 500-1000 | Cambridge, GB | |
| 2010 | 200-500 | London, GB | |
| 2005 | 200-500 | London, GB | |
| 2010 | 200-500 | London, GB | |
| 2005 | 200-500 | London, Birmingham, GB | |
| 2001 | 200-500 | Bollington, GB | |
| 2020 | 200-500 | London, GB | |
| - | 100-200 | Preston, GB | |
| 2007 | 100-200 | City of London, GB | |
| 2016 | 100-200 | Manchester, GB | |
| 2013 | 100-200 | London, GB | |
| 2007 | 100-200 | London, GB | |
| 2020 | 100-200 | Southport, GB | |
| - | 100-200 | London, GB | |
| - | 100-200 | London, GB | |
| 2008 | 100-200 | London, GB | |
| 2019 | 100-200 | London City, GB | |
| 2007 | 100-200 | London, GB | |
| 2000 | 100 - 250 | Hampton Wick, GB | |
| 1995 | 100-200 | Birmingham, GB | |
| 2012 | 200-500 | London, GB | |
| 2004 | 100-200 | London, GB | |
| 1975 | 100-200 | London, GB | |
| 2008 | 100-200 | London, GB | |
| 1990 | 1 - 25 | London, GB | |
| 1997 | 100-200 | London, GB | |
| 1999 | 100-200 | London, GB | |
| 1994 | 100-200 | London, GB | |
| - | 100-200 | Stretford, gb | |
| 2015 | 100-200 | Fitzrovia, GB | |
| 2002 | 100-200 | London, GB | |
| 1996 | 100-200 | London, GB | |
| 1996 | 100-200 | London, GB | |
| 2002 | 100-200 | Wandsworth, GB | |
| 1993 | 100-200 | Birmingham, GB | |
| 2008 | 100-200 | London, GB | |
| 1999 | 25 - 100 | London, GB | |
| 2014 | 100-200 | London, GB | |
| 2001 | 100-200 | London, GB | |
| 1983 | 100-200 | Alton, GB | |
| 2004 | 100-200 | Birchwood, GB | |
| 1997 | 25 - 100 | Carlisle, GB | |
| 1989 | 100-200 | London, GB | |
| 2003 | 100-200 | London, GB | |
| 2012 | 100-200 | London, GB | |
| 2010 | 100-200 | London, GB | |
| 2016 | 100-200 | Salford, GB | |
| 2013 | 100-200 | Frankfurt am Main, GB | |
| 2003 | 100-200 | London, GB | |
| 2001 | 1 - 25 | Middlesex, GB | |
| - | 100-200 | London, GB | |
| 2018 | 10-50 | London, GB | |
| 1989 | 100-200 | Wokingham, GB | |
| - | 100-200 | Southampton, GB | |
| 2001 | 25 - 100 | Llay, GB | |
| 2014 | 100-200 | London, GB | |
| 2015 | 100-200 | London, GB | |
| 2015 | 100-200 | Bristol, GB | |
| 2005 | 25 - 100 | Letchworth Garden City, GB | |
| - | 100-200 | London, GB | |
| 2014 | 100-200 | London, GB | |
| 2000 | 100-200 | London, GB | |
| - | 100-200 | London, GB | |
| 2016 | 100-200 | Manchester, GB | |
| - | 100-200 | London, GB | |
| 2018 | 100-200 | Winnersh Triangle, GB | |
| 2017 | 100-200 | London, GB | |
| 2020 | 200-500 | London, GB |