Founded | Employees | Headquarters Location | |
|---|---|---|---|
| 1985 | 10K - 50K | Thame, GB | |
| 1987 | 10K - 50K | London, GB | |
| 1976 | 5.0K - 10K | London, GB | |
| - | 5000-10000 | Old Windsor, GB | |
| 1917 | 5000-10000 | London, GB | |
| 2000 | 5000-10000 | Warrington, GB | |
| 1840 | 5000-10000 | Southampton, GB | |
| 1997 | 1000-5000 | London, GB | |
| 2007 | 1000-5000 | London, GB | |
| 2017 | 1000-5000 | London, GB | |
| 2007 | 1.0K - 5.0K | London, GB | |
| 2005 | 100 - 250 | London, GB | |
| 2000 | 25 - 100 | London, GB | |
| 1962 | 1.0K - 5.0K | London, GB | |
| 1999 | 1000-5000 | Birmingham, GB | |
| 2007 | 1000-5000 | London, GB | |
| 1924 | 500 - 1.0K | GB | |
| 06/1932 | 100 - 250 | London, GB | |
| 1990 | 250 - 500 | London, GB | |
| 2010 | 500 - 1.0K | Manchester, GB | |
| 2008 | 25 - 100 | Bristol , GB | |
| 2016 | 1000-5000 | London, GB | |
| 2012 | 1000-5000 | London, GB | |
| - | 500-1000 | London, GB | |
| 2006 | 1 - 25 | Waterloo, GB | |
| 1963 | 500-1000 | London, GB | |
| 1837 | 500-1000 | London, GB | |
| 2011 | 500-1000 | London, GB | |
| 1999 | 500-1000 | Leeds, GB | |
| 1931 | 500-1000 | London, GB | |
| 1996 | 500-1000 | Edinburgh, GB | |
| 1993 | 25 - 100 | Berkhamsted , GB | |
| 2011 | 500-1000 | GB | |
| 1812 | 500-1000 | London, GB | |
| 2009 | 500-1000 | London, GB | |
| 1996 | 500-1000 | Knightsbridge, GB | |
| 1795 | 500-1000 | Stoke-on-Trent, GB | |
| - | 25 - 100 | London, GB | |
| - | 200-500 | GB | |
| 2014 | 25 - 100 | London, GB | |
| 2022 | 200-500 | London, GB | |
| 1863 | 200-500 | London, GB | |
| 2011 | 200-500 | London, GB | |
| 2003 | 100 - 250 | Chandler's Cross, GB | |
| 1999 | 200-500 | London, GB | |
| 1991 | 25 - 100 | London, GB | |
| 1998 | 200-500 | Newbury, GB | |
| 1991 | 1 - 25 | Aberdeen, GB | |
| 1906 | 200-500 | Turnberry, GB | |
| 2005 | 200-500 | London, GB | |
| 2011 | 200-500 | Croydon, GB | |
| 1862 | 200-500 | London, GB | |
| 2019 | 200-500 | London, GB | |
| 1736 | 100-200 | LONDON, GB | |
| 2013 | 25 - 100 | London, GB | |
| 2020 | 100-200 | London, GB | |
| 2007 | 25 - 100 | Gibraltar, GB | |
| 1981 | 100-200 | London, GB | |
| - | 50-100 | Luton, GB | |
| 2005 | 100-200 | Hull, GB | |
| 1968 | 100-200 | Bexhill, GB | |
| 1987 | 100 - 250 | Leeds, GB | |
| 2009 | 100-200 | GB | |
| 2016 | 100-200 | Santon, GB | |
| - | 100-200 | Glasgow, GB | |
| 2016 | 100-200 | Southampton, GB | |
| 2020 | 100-200 | Rugby, GB | |
| - | 100-200 | London, GB | |
| 2019 | 100-200 | Glasgow, GB | |
| 2011 | 10-50 | Sheffield, GB | |
| 2007 | 10-50 | London, GB | |
| 2008 | 10-50 | London, GB | |
| 1990 | 10-50 | London , GB | |
| - | 10-50 | The Royal Town of Sutton Coldfield, GB | |
| 2010 | 10-50 | London, GB | |
| 2002 | 100-200 | London, GB | |
| 1996 | 25 - 100 | London, GB | |
| - | 10-50 | GB | |
| - | 25 - 100 | WEYMOUTH, GB | |
| - | 10-50 | Liverpool, GB | |
| 2015 | 10-50 | Belfast, GB | |
| - | 10-50 | Reading, Berkshire, GB | |
| 1999 | 250 - 500 | Barrow in Furness, GB | |
| - | 1 - 25 | Brighton, GB | |
| 2012 | 10-50 | Riddlesworth, GB | |
| 2010 | 10-50 | London, GB | |
| 20 | 10-50 | London, GB | |
| 2004 | 10-50 | YORK, GB | |
| - | 10-50 | Birmingham, GB | |
| 2017 | 10-50 | London, GB | |
| 1960 | 10-50 | Cambridge, GB | |
| 2010 | 10-50 | Stratford-upon-Avon, GB | |
| - | 10-50 | Vancouver, GB | |
| 2019 | 100-200 | Richmond, GB | |
| 2012 | 10-50 | London, GB | |
| - | 10-50 | London, GB | |
| - | 10-50 | Norfolk, GB | |
| 2021 | 10-50 | London, GB | |
| 2022 | 10-50 | London, GB |