| DUNCOMBE, Fiona Magaret ACTIVE | Secretary | 02 Jan 2013 | | | | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| SHAH, Sunil ACTIVE | Secretary | 27 Jan 2025 | | | | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| DENNETT, Paul ACTIVE | Director | 07 Jun 2024 | | United Kingdom | March 1971 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| HOGG, Peter William ACTIVE | Director | 01 Feb 2026 | | United Kingdom | September 1969 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| MANKU, Pritpal ACTIVE | Director | 29 Oct 2025 | | United Kingdom | August 1971 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| WILLIAMS, Jennifer Ann ACTIVE | Director | 06 Sep 2024 | | England | July 1969 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| ALLEN, Denis William RESIGNED | Secretary | | 31 Jan 1993 | | | Hill House The Street, Hatfield Peverel, Chelmsford, CM3 2ET |
| BONNAR, Anthony David RESIGNED | Secretary | 24 Apr 1996 | 21 Nov 2007 | | | Garden Flat, 1 Highbury Hill, London, N5 1SU |
| CHESSHER, Stephen George RESIGNED | Secretary | 08 Apr 2022 | 20 Jan 2025 | | | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| DAY, Margot Annabel RESIGNED | Secretary | 21 Mar 2018 | 15 Jun 2019 | | | Arcadis House 34 York Way, London, N1 9AB, England |
| LAWRENCE, Jillian Louise RESIGNED | Secretary | 01 Jan 2020 | 08 Apr 2022 | | | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| POYNTON, John Edmund RESIGNED | Secretary | 11 Feb 1994 | 18 Aug 1993 | | | The Pines Park Grove, Chalfont St Giles, Buckinghamshire, HP8 4BG |
| POYNTON, John Edmund RESIGNED | Secretary | | 24 Apr 1996 | | | The Pines Park Grove, Chalfont St Giles, Buckinghamshire, HP8 4BG |
| SMITH, Andrew Peter RESIGNED | Secretary | 22 Nov 2007 | 11 Jan 2013 | | | Echq 34, York Way, London, N1 9AB, United Kingdom |
| THOMPSON, David John RESIGNED | Secretary | 31 Jan 1993 | 11 Feb 1994 | | | Downlands House, Tangley, Andover, Hants, SP11 0SH |
| ALGHITA, Mahmoud Bakir Ahmad RESIGNED | Director | 29 Apr 2016 | 30 Jun 2024 | England | March 1963 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| ALLEN, Denis William RESIGNED | Director | | 31 Jan 1993 | | July 1947 | Hill House The Street, Hatfield Peverel, Chelmsford, CM3 2ET |
| ASHWORTH, Ian RESIGNED | Director | 30 Mar 1994 | 27 Jan 1997 | | February 1944 | 10 York Crescent, Wilmslow Park, Wilmslow, Cheshire, SK9 2BB |
| BARRETT, Darren Roy RESIGNED | Director | 04 Jul 2011 | 15 Jul 2012 | United Kingdom | September 1969 | 10 Furnival Street, London, EC4A 1YH |
| BELLEW, Nicholas James RESIGNED | Director | 12 Aug 2019 | 10 Aug 2022 | Wales | March 1979 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| BIMPSON, Simon Timothy RESIGNED | Director | 29 Apr 2016 | 01 Dec 2022 | United Kingdom | September 1974 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| BIMPSON, Simon Timothy RESIGNED | Director | 29 Apr 2016 | 01 Feb 2026 | United Kingdom | September 1974 | Arcadis House 34 York Way, London, N1 9AB, England |
| BONNAR, Anthony David RESIGNED | Director | 24 Apr 1996 | 15 Jan 2008 | | December 1953 | Garden Flat, 1 Highbury Hill, London, N5 1SU |
| BRADLEY, Simon RESIGNED | Director | 29 Apr 2016 | 31 Dec 2016 | England | September 1969 | Arcadis House, 34 York Way, London, N1 9AB, England |
| BROMHEAD, Steven James RESIGNED | Director | 01 Nov 2018 | 18 Oct 2021 | England | December 1972 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| BROOKES, Alan Geoffrey RESIGNED | Director | 01 Mar 2014 | 21 Jan 2019 | England | November 1961 | Arcadis House, 34 York Way, London, N1 9AB, England |
| BROOKS, Keith Lawrence RESIGNED | Director | 11 Jan 2013 | 29 Feb 2016 | England | January 1966 | Arcadis House, 34 York Way, London, N1 9AB, England |
| BROWNING, Michael Leslie RESIGNED | Director | | 31 Mar 1999 | | May 1941 | 32 Waterloo Gardens, Milner Square Islington, London, N1 1TZ |
| CARROLL, Michael Dennis RESIGNED | Director | 06 May 2011 | 15 Oct 2012 | United Kingdom | August 1953 | 10 Furnival Street, London, EC4A 1YH |
| CASH, Stewart RESIGNED | Director | 07 Jun 2024 | 29 Oct 2025 | United Kingdom | January 1973 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| CHRISTIE, Edel Louise RESIGNED | Director | 22 Mar 2018 | 01 Sep 2020 | United Kingdom | June 1970 | Arcadis House 34 York Way, London, N1 9AB, England |
| CLARK, Anne Rosemary RESIGNED | Director | 01 May 2015 | 12 Aug 2019 | England | December 1964 | Arcadis House, 34 York Way, London, N1 9AB, England |
| COOKE, Kevin Charles RESIGNED | Director | 31 Mar 1999 | 02 Feb 2007 | United Kingdom | June 1956 | 17 High Garth, Esher, Surrey, KT10 9DN |
| COWLARD, Mark Allan RESIGNED | Director | 29 Apr 2016 | 10 Aug 2022 | England | June 1969 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| DIDCOTT, Stephen Ronald RESIGNED | Director | 31 Mar 2008 | 31 Mar 2011 | United Kingdom | February 1955 | 10 Furnival Street, London, EC4A 1YH |
| DIDCOTT, Stephen Ronald RESIGNED | Director | 31 Mar 1999 | 02 Feb 2007 | | February 1955 | 6 Daymer Gardens, Pinner, Middlesex, HA5 2HP |
| DUNCOMBE, Fiona Margaret RESIGNED | Director | 18 Jun 2013 | 31 Aug 2013 | England | February 1967 | Echq 34, York Way, London, N1 9AB, United Kingdom |
| ENGLAND, Lucy Rachel Angharad RESIGNED | Director | 01 Nov 2018 | 18 Oct 2021 | United Kingdom | February 1977 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| FAUGHNAN, Antony Roger RESIGNED | Director | 29 Apr 2016 | 01 Feb 2017 | Wales | April 1966 | Arcadis House, 34 York Way, London, N1 9AB, England |
| FORD, Ian Michael RESIGNED | Director | | 31 Mar 1999 | | April 1946 | Glebe House Shoreham Lane, Riverhead, Sevenoaks, Kent, TN13 3BS |
| GOODFELLOW, Peter John RESIGNED | Director | | 31 Mar 1999 | | March 1942 | Mill Corner 146 Mill Road, Stock, Ingatestone, Essex, CM4 9LR |
| GOODFELLOW, Peter John RESIGNED | Director | | 26 Jun 1993 | | March 1942 | Mill Corner 146 Mill Road, Stock, Ingatestone, Essex, CM4 9LR |
| HALLETT, Barrie RESIGNED | Director | | 31 Mar 1999 | | July 1942 | The Oast House, Elliotts Lane, Brasted, Westerham, Kent, TN16 1JD |
| HALLETT, Barrie RESIGNED | Director | | 26 Jun 1993 | | July 1942 | The Oast House, Elliotts Lane, Brasted, Westerham, Kent, TN16 1JD |
| HOTTENHUIS, Stephanie RESIGNED | Director | 20 Oct 2005 | 01 Sep 2008 | | March 1965 | Loostraat 25-C, Loo Gld, 6924 Ac, Netherlands |
| JASKI, Christiaan Michiel RESIGNED | Director | 21 Sep 2005 | 31 Jul 2010 | Netherlands | February 1959 | 10 Furnival Street, London, EC4A 1YH |
| KEAN, Graham David George RESIGNED | Director | 11 Jan 2013 | 01 Mar 2014 | England | February 1967 | Echq 34, York Way, London, N1 9AB, United Kingdom |
| LIGHT, Simon Charles Vernon RESIGNED | Director | 01 Jan 2016 | 31 Oct 2018 | United Kingdom | July 1974 | Arcadis House, 34 York Way, London, N1 9AB, England |
| LIMAGE, Andrew RESIGNED | Director | 01 Jan 2016 | 31 Dec 2017 | England | March 1956 | Arcadis House, 34 York Way, London, N1 9AB, England |
| MADDEN, Peter Vincent RESIGNED | Director | 01 Mar 2014 | 21 Jan 2019 | England | July 1961 | Arcadis House, 34 York Way, London, N1 9AB, England |
| MAIDMENT, Nigel Stuart RESIGNED | Director | 31 Mar 1999 | 02 Feb 2007 | | August 1955 | 14 Roundlyn Gardens, St. Mary Cray, Orpington, Kent, BR5 3SD |
| MCCARTHY, Helen Karen RESIGNED | Director | 01 Feb 2017 | 31 Oct 2018 | Wales | May 1968 | Arcadis House, 34 York Way, London, N1 9AB, England |
| MORGAN, Thomas Trevor RESIGNED | Director | 01 Nov 2018 | 30 Jun 2024 | United Kingdom | January 1975 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| MORLING, Neil Andrew RESIGNED | Director | 01 Mar 2014 | 30 Apr 2015 | England | February 1962 | Echq 34, York Way, London, N1 9AB, United Kingdom |
| NEAL, Timothy RESIGNED | Director | 25 Oct 2012 | 01 Mar 2014 | England | January 1967 | Echq 34, York Way, London, N1 9AB, United Kingdom |
| PARMAR, Nilesh RESIGNED | Director | 01 Jan 2020 | 18 Oct 2021 | England | July 1976 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| RILEY, Mathew John RESIGNED | Director | 11 Jan 2013 | 25 Jul 2016 | England | September 1965 | Arcadis House, 34 York Way, London, N1 9AB, England |
| SCHNEIDER, Friedrich Michael Theodor RESIGNED | Director | 01 Aug 2010 | 12 Jul 2012 | Germany | March 1962 | 10 Furnival Street, London, EC4A 1YH |
| SMITH, Andrew Peter RESIGNED | Director | 12 Jul 2012 | 11 Jan 2013 | England | March 1969 | Echq 34, York Way, London, N1 9AB, United Kingdom |
| SMITH, Ian Robert RESIGNED | Director | 31 Mar 1999 | 02 Feb 2007 | England | May 1961 | Langdale, Longfield Avenue New Barn, Longfield, Kent, DA3 7LA |
| STEVENS, Mark Howard RESIGNED | Director | 31 Mar 1999 | 02 Feb 2007 | | October 1956 | 8a High Street, Ingatestone, Essex, CM4 7EE |
| THOMPSON, David John RESIGNED | Director | | 31 Dec 2006 | United Kingdom | November 1948 | Downlands House, Tangley, Andover, Hants, SP11 0SH |
| VAN DER KLIFT, Bernardus, Drs RESIGNED | Director | 31 Mar 2008 | 30 Apr 2010 | | July 1959 | Vijverlaan 5, Driebergen, 3971 Hj, Netherlands |
| VICKERY, Paul Lee RESIGNED | Director | 01 Sep 1995 | 27 Jan 1997 | | April 1943 | Blakeways, Woodrow Chaddesley Corbett, Kidderminster, Worcestershire, DY10 4QG |
| VINCE, Peter John RESIGNED | Director | 31 Mar 1999 | 31 Jul 2011 | United Kingdom | May 1958 | 10 Furnival Street, London, EC4A 1YH |
| VREE, Renier RESIGNED | Director | 01 Jun 2010 | 11 Jan 2013 | The Netherlands | July 1964 | 10, Furnival Street, London, EC4A 1YH |
| WHITTAKER, Sian RESIGNED | Director | 01 Dec 2022 | 06 Sep 2024 | United Kingdom | February 1981 | 80, Fenchurch Street, London, EC3M 4BY, United Kingdom |
| WILLIAMS, John Huw RESIGNED | Director | 01 Mar 2016 | 01 Feb 2017 | United Kingdom | July 1964 | Arcadis House, 34 York Way, London, N1 9AB, England |
| WILLIAMS, John Huw RESIGNED | Director | 01 Sep 2015 | 01 Jan 2016 | United Kingdom | July 1964 | Arcadis House, 34 York Way, London, N1 9AB, England |
| YOUELL, Philip Anthony RESIGNED | Director | 11 Jan 2013 | 01 Mar 2014 | England | December 1960 | Echq 34, York Way, London, N1 9AB, United Kingdom |