| ASHWORTH, John Adrian ACTIVE | Director | 22 Apr 2014 | | United Kingdom | January 1961 | East Ashling Grange, Funtington Road, East Ashling, Chichester, West Sussex, PO18 9AP, England |
| DARVALL, Richard Thomas ACTIVE | Director | 21 Oct 2024 | | England | April 1984 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| VEASEY, Simon John ACTIVE | Director | 18 Apr 2024 | | England | February 1979 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| BROCK, Suzanne Louise RESIGNED | Secretary | 05 Feb 2008 | 14 Sep 2010 | | | 101 Verulam Road, St. Albans, Hertfordshire, AL3 4DL |
| BYGRAVE, David Charles RESIGNED | Secretary | 14 Sep 2010 | 31 Jul 2015 | | | Cutlers Court, 115 Houndsditch, London, EC3A 7BR, England |
| JOHNSON, Michael James RESIGNED | Secretary | 30 Jun 2005 | 05 Feb 2008 | | | Flat B, 19-21 Lancaster Gate, London, W2 3LH |
| JOHNSON, Michael James RESIGNED | Secretary | 10 Jun 1993 | 20 Feb 2002 | | | 36 Albion Street, London, W2 2AU |
| MAITYARD, Chrstopher John RESIGNED | Secretary | 20 Feb 2002 | 24 Jun 2005 | | | 8 Glebe Road, Cheam Village, Surrey, SM2 7NT |
| WOODS, Ashley Graham RESIGNED | Secretary | 31 Jul 2015 | 17 May 2021 | | | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Secretary | 03 Jun 1993 | 10 Jun 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |
| BYGRAVE, David Charles RESIGNED | Director | 14 Jun 2011 | 31 Jul 2015 | England | April 1968 | Fox Hill End, Brick Hill, Chobham, Woking, Surrey, GU24 8TH, England |
| CAPLIN, Paul RESIGNED | Director | 10 Jun 1993 | 27 Apr 2016 | England | December 1954 | 39 All Saints Road, London, W11 1HE |
| GILLILAND, Michael John RESIGNED | Director | 28 Mar 1996 | 15 Dec 1997 | | December 1959 | 108 Henley Drive, Frimley Green, Camberley, Surrey, GU16 6JT |
| GLEN, Nigel William, Dr RESIGNED | Director | 15 Dec 1999 | 22 Aug 2003 | United Kingdom | October 1959 | Flat 1.2, 100 Building Alaska, 61 Grange Road, London, SE1 3BA |
| HAWLEY, Adam Stanley James RESIGNED | Director | 21 Jun 2000 | 09 Jun 2015 | England | October 1969 | 4 Hill Close, Cobham, Surrey, KT11 2BQ |
| JOHNSON, Brian Derek RESIGNED | Director | 14 Jun 1993 | 22 Jun 2000 | England | August 1937 | The Villa, Macey Street, Torpoint, Cornwall, PL11 2AJ |
| JOHNSON, Michael James RESIGNED | Director | 10 Jun 1993 | 02 Apr 2015 | England | September 1951 | 20, Cross Street, London, N1 2BG, United Kingdom |
| MAITYARD, Chrstopher John RESIGNED | Director | 16 Jan 2002 | 24 Jun 2005 | United Kingdom | July 1968 | 8 Glebe Road, Cheam Village, Surrey, SM2 7NT |
| MYLES, Patrick RESIGNED | Director | 21 Apr 2009 | 05 Jun 2018 | England | December 1977 | 177b Langham Road, London, N15 3LP |
| REDPATH, Andrew John RESIGNED | Director | 25 Jul 2013 | 22 Dec 2015 | England | June 1974 | 69, Elm Grove Road, London, SW13 0BX, England |
| SOUTH, Stephen Edward RESIGNED | Director | 05 Jun 2018 | 21 Oct 2024 | United Kingdom | December 1982 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| TUCKWELL, Clive Edmund RESIGNED | Director | 10 Jun 1993 | 22 Jun 2000 | | May 1959 | 43 Camborne Road, Morden, Surrey, SM4 4JL |
| VEASEY, Simon John RESIGNED | Director | 12 Oct 2018 | 01 Sep 2022 | England | February 1979 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| YOUNG, Karen Elizabeth RESIGNED | Director | 21 Nov 2001 | 31 Mar 2003 | | July 1963 | 15 Rugosa Road, West End, Woking, Surrey, GU24 9PA |
| COMBINED NOMINEES LIMITED RESIGNED | Nominee Director | 03 Jun 1993 | 10 Jun 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NA |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Director | 03 Jun 1993 | 10 Jun 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |