| Q1 PROFESSIONAL SERVICES LIMITED ACTIVE | Secretary | 17 May 2021 | | | | One, Station Approach, Harlow, Essex, CM20 2FB, England |
| ANDREWS, Josephine ACTIVE | Director | 07 Apr 2020 | | United Kingdom | September 1944 | One, Station Approach, Harlow, Essex, CM20 2FB, England |
| HOFF, James ACTIVE | Director | 12 Nov 2014 | | United Kingdom | July 1976 | One, Station Approach, Harlow, Essex, CM20 2FB, England |
| LIVINA, Valeria, Dr ACTIVE | Director | 12 Nov 2014 | | United Kingdom | July 1969 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, United Kingdom |
| WRIGHT, Patricia Valerie ACTIVE | Director | 17 Oct 2000 | | United Kingdom | April 1946 | 1 Mathias Court, 119 Church Road, Richmond, Surrey, TW10 6LL |
| BAKER, Mark RESIGNED | Secretary | 13 Nov 1995 | 08 Oct 1996 | | | 20 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| KAVANAGH, Alexandra Caroline RESIGNED | Secretary | 22 Jan 1999 | 23 Aug 2010 | | | 4 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| KRUMANN, Alfred RESIGNED | Secretary | 25 Oct 1991 | 11 Apr 1994 | | | 11 Moresby Road, London, E5 9LE |
| MANICKAM, Gordon RESIGNED | Secretary | 26 Feb 1997 | 22 Jan 1999 | | | 2 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| MOORE, Iain RESIGNED | Secretary | 08 Oct 1996 | 26 Feb 1997 | | | 22 Hampton Community Health Centre, Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| TAGER, Nathan RESIGNED | Secretary | 25 Oct 1991 | 11 Apr 1994 | | | 23 Warwick Grove, London, E5 9HX |
| WALDMAN, Erika RESIGNED | Secretary | | 25 Oct 1991 | | | 34 Moresby Road, London, E5 9LF |
| EASTACRE HOLDINGS LIMITED RESIGNED | Secretary | 04 Mar 1993 | 29 Apr 1994 | | | Nanny Cay, PO BOX 362, Road Town, Tortola |
| FIFO SECRETARIES LTD RESIGNED | Secretary | 29 Apr 1994 | 19 Sep 1995 | | | 31 Harley Street, London, W1N 1DA |
| BAKER, Mark RESIGNED | Director | 13 Nov 1995 | 08 Oct 1996 | | February 1962 | 20 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| BELLIS, David RESIGNED | Director | 14 Nov 2006 | 27 Feb 2020 | United Kingdom | December 1971 | 11 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| KAVANAGH, Alexandra Caroline RESIGNED | Director | 13 Nov 1995 | 23 Aug 2010 | United Kingdom | December 1947 | 4 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| KHAN, Shahid RESIGNED | Director | 01 Nov 2010 | 18 Apr 2012 | England | September 1952 | 9 Tangley Park, Tangley Park Road, Hampton Nurseryland, Hampton, Middlesex, TW12 3YH, England |
| LANGFORD, Marion Diane RESIGNED | Director | 30 Sep 1997 | 04 Apr 2018 | United Kingdom | January 1934 | 1 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| MANICKAM, Gordon RESIGNED | Director | 26 Feb 1997 | 22 Jan 1999 | | October 1955 | 2 Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| MOORE, Iain RESIGNED | Director | 08 Oct 1996 | 26 Feb 1997 | | June 1970 | 22 Hampton Community Health Centre, Tangley Park Road, Hampton, Middlesex, TW12 3YH |
| WALDMAN, Erika RESIGNED | Director | | 06 Apr 1993 | | September 1948 | 34 Moresby Road, London, E5 9LF |
| WALDMAN, Selig Wolf RESIGNED | Director | | 06 Apr 1993 | | May 1948 | 34 Moresby Road, London, E5 9LF |
| WILLIAMS, Mark Christopher RESIGNED | Director | 29 Apr 1994 | 19 Sep 1995 | | October 1963 | 58 Atbara Road, Teddington, Middlesex, TW11 9PD |
| EASTACRE HOLDINGS LIMITED RESIGNED | Director | 04 Mar 1993 | 29 Apr 1994 | | | Nanny Cay, PO BOX 362, Road Town, Tortola |
| WESTMEAD NOMINEES LIMITED RESIGNED | Director | 04 Mar 1993 | 29 Apr 1994 | | | 9 Home Street, Virgin Islands |