| ELEY, Sarah Louise ACTIVE | Secretary | 11 Jul 2019 | | | | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| FARLEY, Iain David ACTIVE | Director | 05 May 2023 | | United Kingdom | April 1970 | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| MCALISTER, Lewis John Woodburn ACTIVE | Director | 06 Jul 2006 | | United Kingdom | May 1966 | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| AINGER, Colin Peter RESIGNED | Secretary | 24 Oct 1997 | 02 Aug 1999 | | | Cardwell House, Pangbourne Road, Upper Basildon, Berkshire, RG8 8LN |
| COX, Melanie Rachel RESIGNED | Secretary | 23 Jan 2008 | 03 Nov 2014 | | | C/O Expro First Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| DAND, Anthony Michael RESIGNED | Secretary | 02 Aug 1999 | 28 Nov 2006 | | | 12 Branksome Court, Prospect Street, Reading, Berkshire, RG1 7XR |
| MCALISTER, Lewis John Woodburn RESIGNED | Secretary | 28 Nov 2006 | 23 Jan 2008 | | | Woodburn House, School Road, Ardington, Wantage, Oxfordshire, OX12 8PE |
| O'CONNELL, Clare RESIGNED | Secretary | 04 Nov 2014 | 11 Jul 2019 | | | C/O Expro, Third Floor, 14-16 Cross Street, Reading, Berkshire, RG1 1SN, United Kingdom |
| SCOTT, Sandra RESIGNED | Secretary | 04 Nov 1996 | 24 Oct 1997 | | | 40 The Grove, Ealing, London, W5 5LH |
| WALTON, John RESIGNED | Secretary | 14 May 1991 | 04 Nov 1996 | | | 9 Withy Close, Tilehurst, Reading, Berkshire, RG31 5SQ |
| AINGER, Colin Peter RESIGNED | Director | 14 May 1991 | 06 Jul 2006 | | January 1950 | Cardwell House, Pangbourne Road, Upper Basildon, Berkshire, RG8 8LN |
| ASHTON, Nigel Andrew RESIGNED | Director | 01 Sep 1995 | 02 Apr 2001 | | March 1954 | 1 Kirkton Road, Westhill, Sjene, Aberdeen, AB32 6LF |
| ASHTON, Simon John RESIGNED | Director | 01 Sep 1995 | 04 Nov 1996 | | September 1960 | Mondriaanlaan 8, 1701 Td Heerhugowaard, The Netherlands |
| AWARA, Abdalla Zakaria RESIGNED | Director | 09 Jul 2008 | 26 Feb 2010 | | March 1964 | Penthouse 101 Kepplestone Manor, 88-101 Queens Highlands Queens Road, Aberdeen, AB15 4AS |
| COLLIS, Mark Russell RESIGNED | Director | 26 Jan 2011 | 19 Jun 2012 | England | January 1972 | 7, Wallis Road, Basingstoke, Hants, RG21 3DW, United Kingdom |
| COUTTS, Graeme Forbes RESIGNED | Director | 01 Sep 1995 | 31 Jul 2011 | Scotland | April 1959 | Riversview, Banchory, Kincardineshire, AB31 5HS |
| CRUMP, Mark Leslie RESIGNED | Director | 04 Jan 2010 | 26 Jan 2011 | England | February 1963 | Oaklands, 9 Birch Grove, Kingswood, England, KT20 6QU, England |
| DAWSON, John Hennessey RESIGNED | Director | | 30 Sep 2003 | | June 1944 | Lawn Woodlands Road, Shiplake, Henley-On-Thames, Oxfordshire, RG9 4AA |
| DODDS, Alex RESIGNED | Director | 01 Aug 1998 | 30 May 2000 | | March 1957 | Blaikiwell Steading, Maryculter, Aberdeen, AB12 5YX |
| EDWARDS, Jeffrey Charles RESIGNED | Director | 17 Jan 1997 | 04 Jun 2001 | | August 1956 | Eastwoodlands House, Kinaldie, Dyce, Aberdeen |
| FERGUSON, Stuart Edward RESIGNED | Director | 09 Nov 2000 | 23 Feb 2001 | | June 1966 | 25 Cromwell Road, Aberdeen, AB15 4UQ |
| GEDDES, Alistair George Sinclair RESIGNED | Director | 02 Oct 2012 | 31 Mar 2023 | United Kingdom | April 1962 | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| HENDERSON, Jeremy Neil RESIGNED | Director | 19 Sep 1994 | 10 Jun 1997 | | March 1947 | Tillyfour House, Tough, Alford, Aberdeenshire, AB33 8DX |
| HUNTER, Alexander RESIGNED | Director | 19 Sep 1994 | 05 Dec 1996 | | May 1954 | 35 Pittengullies Brae, Peterculter, Aberdeen, AB14 0QU |
| KITCHENER, Antony Mark RESIGNED | Director | 04 Nov 1996 | 03 Jul 2001 | | March 1961 | De Baan 2, 1749 Vs Warmenhuizen, The Netherlands |
| MACKENZIE, Colin James RESIGNED | Director | 03 Jun 2020 | 05 May 2023 | Scotland | February 1962 | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| MAIR, Robin Barclay RESIGNED | Director | 09 Oct 2007 | 08 May 2012 | Scotland | October 1960 | 88 Broomhill Road, Aberdeen, Aberdeenshire, AB10 6HU |
| MARTINDALE, Michael John RESIGNED | Director | 15 Mar 1996 | 29 Dec 2006 | United Kingdom | November 1946 | 15 Sandown Avenue, Esher, Surrey, KT10 9NT |
| MAWTUS, Christopher Donald RESIGNED | Director | 01 Nov 2005 | 01 Jul 2011 | United Kingdom | June 1958 | 3, The Square, Kenmore, Aberfeldy, Perthshire, PH15 2HH, United Kingdom |
| NEILL, Francis James RESIGNED | Director | 06 Dec 2002 | 16 Jul 2007 | Scotland | September 1960 | 8 Macaulay Gardens, Aberdeen, Aberdeenshire, AB15 8FN |
| PALMER, Keith John RESIGNED | Director | 01 Feb 2011 | 09 Jan 2015 | United Kingdom | October 1959 | C/O Expro First Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| PRISE, Gavin Jonathan RESIGNED | Director | 02 Apr 2001 | 18 Feb 2010 | | January 1962 | East Brotherfield, Kingswell, Aberdeen, AB1 8QN |
| ROBB, Ian James RESIGNED | Director | 09 Jan 2012 | 31 Mar 2020 | United Kingdom | September 1959 | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| ROBB, Ian James RESIGNED | Director | 11 May 2010 | 28 Jan 2011 | United Kingdom | September 1959 | 3, Milton View, Kemnay, Inverurie, Aberdeenshire, AB51 5EW |
| RODGER, Lorraine Margaret RESIGNED | Director | 19 Jun 2001 | 04 Jun 2010 | Scotland | September 1957 | 58 Fountainhall Road, Aberdeen, Aberdeenshire, AB15 4EH |
| SIMS, Neil Ronald RESIGNED | Director | 09 Jan 2015 | 03 Jun 2020 | United Kingdom | October 1965 | Second Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| SPEAKMAN, Michael James RESIGNED | Director | 01 Mar 2004 | 05 Apr 2012 | United Kingdom | March 1964 | HP13 |
| TORRINGTON, Timothy Howard St George, The Viscount RESIGNED | Director | | 29 Jul 1992 | | July 1943 | Great Hunts Place, Owslebury, Winchester, Hampshire, SO21 1JL |
| WILKINS, Ian Clive RESIGNED | Director | | 29 Mar 1996 | | February 1937 | 10 Holmemoor Drive, Sonning, Berkshire, RG4 0TE |
| WILLIAMS, Glynn Richard RESIGNED | Director | 15 Sep 1993 | 13 Jun 1995 | | February 1955 | Lilac Cottage, Brightwalton, Newbury, Berkshire, RG16 0BP |
| WOODBURN, Charles Nicholas RESIGNED | Director | 25 Nov 2010 | 31 Mar 2016 | United Kingdom | March 1971 | C/O Expro First Floor, Davidson House, Forbury Square, Reading, Berkshire, RG1 3EU, United Kingdom |
| WOOLLEY, Eric Rhys RESIGNED | Director | 10 Jun 1997 | 31 Oct 2003 | | March 1959 | 6 Breedons Hill, Pangbourne, Berkshire, RG8 7AT |