Founded | Employees | Headquarters Location | |
|---|---|---|---|
| 1994 | 25 - 100 | London, GB | |
| - | 1000-5000 | London, GB | |
| - | 100 - 250 | London, GB | |
| 1990 | 200-500 | London, GB | |
| 2016 | 200-500 | London, GB | |
| 1987 | 1 - 25 | London, GB | |
| 1994 | 25 - 100 | London, GB | |
| 2006 | 25 - 100 | Basingstoke, GB | |
| 2008 | 100 - 250 | London, GB | |
| 1961 | 25 - 100 | Manchester, GB | |
| 2000 | 25 - 100 | London, GB | |
| 2008 | 100-200 | London, GB | |
| 1988 | 100-200 | Reading, GB | |
| 1998 | 100-200 | London, GB | |
| - | 100-200 | Wakefield, GB | |
| 1989 | 100-200 | London, GB | |
| 2012 | 100-200 | Bath, GB | |
| - | 10-50 | London, GB | |
| 1991 | 10-50 | London, GB | |
| - | 10-50 | London, gb | |
| 1992 | 25 - 100 | London, GB | |
| - | 10-50 | London, GB | |
| 2009 | 10-50 | London, GB | |
| 2015 | 10-50 | London, GB | |
| 2004 | 10-50 | London, GB | |
| 2016 | 10-50 | London, GB | |
| - | 10-50 | London, GB | |
| 2012 | 10-50 | London, GB | |
| - | 10-50 | London, GB | |
| - | 1-10 | GB | |
| 2014 | 1-10 | Bath, GB | |
| 2005 | 1-10 | Cardiff, GB | |
| 2011 | 1-10 | Edinburgh, GB | |
| - | 25 - 100 | Kinver, GB | |
| 2011 | 1-10 | London, GB | |
| 2001 | - | London, GB | |
| 2001 | 1 - 25 | London, GB | |
| 1955 | 25 - 100 | London, GB | |
| - | - | GB | |
| 2013 | 10-50 | Belfast, GB | |
| 2000 | 100-200 | London, GB | |
| 1988 | 1 - 25 | london, GB | |
| 2005 | 1 - 25 | London, GB | |
| 1994 | 100-200 | London, GB | |
| 1982 | 100 - 250 | London, GB | |
| 2000 | 25 - 100 | London, GB | |
| 2001 | 10-50 | London, GB | |
| 1993 | 1.0K - 5.0K | London, GB | |
| 2001 | 200-500 | London, GB | |
| 1986 | 100-200 | London, GB | |
| 2002 | 10-50 | 55 New Oxford Street, GB | |
| 1981 | 1.0K - 5.0K | London, gb | |
| 1983 | 100 - 250 | London, GB | |
| 1985 | 200-500 | GB | |
| 2011 | 10-50 | London, GB | |
| - | - | London, GB | |
| 1993 | 10-50 | London, GB | |
| 2003 | 1000-5000 | London, GB | |
| 2000 | 25 - 100 | London, GB | |
| 2003 | 10-50 | London, GB | |
| 1997 | 100-200 | London, GB | |
| 2011 | 1-10 | Bangor, GB | |
| 2001 | 100-200 | London, GB | |
| 2003 | 10-50 | London, GB | |
| 1998 | 100-200 | London, GB | |
| 1989 | 100-200 | London, GB | |
| 2002 | 25 - 100 | Kingston Upon Thames, GB | |
| 2005 | 1-10 | London, GB | |
| - | 500-1000 | London, GB | |
| 2010 | 100-200 | London, GB | |
| 1985 | 100-200 | London , GB | |
| 2025 | 100-200 | London, GB | |
| 1986 | 500 - 1.0K | London, GB | |
| 1998 | 25 - 100 | London, GB | |
| 2005 | 25 - 100 | London, GB | |
| - | - | GB | |
| 2001 | 100-200 | London, GB | |
| 2008 | 10-50 | Leeds, GB | |
| 2013 | 1 - 25 | London, GB | |
| 2012 | 1000-5000 | London, GB | |
| 2007 | 100-200 | London, GB | |
| 1998 | 100 - 250 | London, GB | |
| 2009 | 10-50 | London, GB | |
| 2011 | 10-50 | London, GB | |
| 2010 | 10-50 | Twyford, GB | |
| 1999 | 200-500 | London, GB | |
| 2009 | 25 - 100 | Bristol, GB | |
| 1973 | 10-50 | Leeds, GB | |
| 1988 | 10-50 | London, GB | |
| 1987 | 10-50 | London, GB | |
| 1984 | 250 - 500 | London, GB | |
| 1998 | 100-200 | London, GB | |
| 1992 | 10-50 | London, GB | |
| 1948 | 10-50 | London, GB | |
| - | 10-50 | London, GB | |
| 1986 | 25 - 100 | Douglas, GB | |
| 2013 | 25 - 100 | London, GB | |
| 2009 | 100-200 | London, GB | |
| - | 1 - 25 | London, GB |