| PRISM COSEC LIMITED ACTIVE | Secretary | 20 Aug 2018 | | | | Highdown House, Yeoman Way, Worthing, West Sussex, BN99 3HH, United Kingdom |
| FRANCIS, Timothy Perry ACTIVE | Director | 01 Jan 2021 | | United States | December 1976 | Valmont Industries, Inc., 15000 Valmont Plaza, Omaha, Nebraska, 68154, United States |
| MASSEY, Roger Andrew ACTIVE | Director | 11 Feb 2011 | | United States | July 1969 | Valmont Industries, Inc., 15000 Valmont Plaza, Omaha, Nebraska, 68154, United States |
| BUNYAN, Andrew John Paul RESIGNED | Secretary | 19 Sep 2001 | 30 Sep 2005 | | | 29 Dudley Gardens, Harrow, Middlesex, HA2 0DQ |
| STASS, Keith Albert Trevor RESIGNED | Secretary | | 12 Dec 1998 | | | The White Lodge, High Park, Droitwich, Worcestershire, WR9 0AG |
| WALKER, Philip Henry RESIGNED | Secretary | 12 Dec 1998 | 19 Sep 2001 | | | 9 Daisy Bank Close, Pelsall, Walsall, West Midlands, WS3 4BL |
| DAVID VENUS & COMPANY LLP RESIGNED | Secretary | 30 Sep 2010 | 20 Aug 2018 | | | 42-50, Hersham Road, Walton-On-Thames, Surrey, KT12 1RZ, United Kingdom |
| DELTA (DCC) LIMITED RESIGNED | Secretary | 30 Sep 2005 | 30 Sep 2010 | | | Bridewell Gate, 9 Bridewell Place, London, EC4V 6AW |
| BRIMBLE, John RESIGNED | Director | | 28 Jun 1996 | United Kingdom | August 1941 | Carpenters Cottage, Nether Westcote, Chipping Norton, Oxfordshire, OX7 6SD |
| BUNYAN, Andrew John Paul RESIGNED | Director | 17 Mar 2005 | 30 Sep 2005 | | September 1970 | 29 Dudley Gardens, Harrow, Middlesex, HA2 0DQ |
| CHESTERMAN, Robin Charles Guy RESIGNED | Director | | 22 Dec 1995 | England | December 1930 | 202 Rushmere Road, Ipswich, Suffolk, IP4 3LT |
| FORD, Janet Anne RESIGNED | Director | 30 Sep 1999 | 17 Mar 2005 | United Kingdom | February 1957 | 40 Princes Gardens, West Acton, London, W3 0LG |
| GNOSILL, Michael John RESIGNED | Director | 01 Jul 1996 | 12 Dec 1998 | | August 1951 | 28 York Avenue, Finchfield, Wolverhampton, West Midlands, WV3 9BU |
| GOWEN, Robert William RESIGNED | Director | 12 Jul 2010 | 11 Feb 2011 | England | September 1971 | Bridewell Gate, 9 Bridewell Place, London, EC4V 6AW, England |
| HUGHES, James Bernard RESIGNED | Director | 20 Jul 1998 | 12 Dec 1998 | Warwickshire | April 1948 | 41 Southfield Avenue, Castle Bromwich, Birmingham, B36 9BA |
| INGRAM, John David RESIGNED | Director | 20 Jul 1998 | 12 Dec 1998 | | June 1947 | 17 Oldberrow Close, Monkspath, West Midlands, B90 4LX |
| JAKSICH, Mark Charles RESIGNED | Director | 11 Feb 2011 | 31 Dec 2020 | United States | September 1957 | Valmont, One Valmont Plaza, 13815 First National Bank Parkway, Omaha, Nebraska, 68154-5215, United States |
| JENKINS, Michael Victor RESIGNED | Director | | 31 Oct 1997 | United Kingdom | July 1950 | Oaklands 44 Middlefield Lane, Hagley, Stourbridge, Worcestershire, DY9 0PX |
| KEMPSTER, Jonathan RESIGNED | Director | 30 Oct 2007 | 12 Jul 2010 | England | January 1963 | Glaston Hill Lodge, Church Road, Eversley, Hampshire, RG27 0PX |
| LUTON, Mark RESIGNED | Director | 17 Mar 2005 | 30 Oct 2007 | | August 1970 | 52 Beechwood Avenue, Farnborough, Kent, BR6 7EY |
| MARRIOT, Paul Roger RESIGNED | Director | 25 Sep 2001 | 31 Mar 2008 | | March 1968 | 37 Park Road, Radlett, Hertfordshire, WD7 8EG |
| NARCISO, John Peter RESIGNED | Director | 30 Sep 1999 | 17 Mar 2005 | | November 1947 | 52 Wood Dale, Great Baddow, Chelmsford, Essex, CM2 8EZ |
| OZELTON, John Edward RESIGNED | Director | | 06 Mar 1998 | | July 1944 | Kirstenbosch Chapel Lane, Whittington, Lichfield, Staffordshire, WS14 9JT |
| PRITCHARD, Neil Bartley RESIGNED | Director | 31 Mar 2008 | 11 Aug 2008 | England | December 1971 | 80, Park Road, New Barnet, Herts, EN4 9QF, Uk |
| SMALLEY, Robert Anthony RESIGNED | Director | 11 Aug 2008 | 11 Feb 2011 | England | January 1976 | 1, Carlbury Close, St Albans, Herts, AL1 5DR, Uk |
| STASS, Keith Albert Trevor RESIGNED | Director | | 12 Dec 1998 | | April 1945 | The White Lodge, High Park, Droitwich, Worcestershire, WR9 0AG |
| STEPHENS, Donald Michael RESIGNED | Director | | 12 Dec 1998 | | March 1941 | 191a Old Birmingham Road, Marlbrook, Bromsgrove, Worcestershire, B60 1DQ |
| VAN DER KINDERE, Michel RESIGNED | Director | 31 Oct 1997 | 30 Sep 1999 | | September 1946 | Av Lancaster 81, Brussels, B1180, Belgium |
| WOODS, Andrew Nicholas RESIGNED | Director | 31 Oct 1997 | 30 Sep 1999 | | September 1960 | 15 Albert Road, Stroud Green, London, N4 3RR |