| PRISM COSEC LIMITED ACTIVE | Secretary | 20 Aug 2018 | | | | Elder House, St Georges Business Park, 207 Brooklands Road, Weybridge, Surrey, KT13 0TS, 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 |
| ASQUITH, Mark Anthony RESIGNED | Secretary | 01 Nov 1999 | 03 Dec 2001 | | | 50, Retford Road, Sheffield, South Yorkshire, S13 9LE |
| TOLE, Robert John RESIGNED | Secretary | 03 Dec 2001 | 30 Sep 2009 | | | 2 Styveton Way, Steeton, Keighley, West Yorkshire, BD20 6TP |
| WALKER, Philip Henry RESIGNED | Secretary | | 01 Nov 1999 | | | 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 |
| GALLAGHER, Noel Joseph RESIGNED | Director | 01 Nov 1999 | 14 Oct 2003 | | December 1949 | 61 Princes Gardens, Codsall, South Staffordshire, WV8 2DL |
| GARVEY, William Edward RESIGNED | Director | | 30 Jun 1998 | | November 1937 | 9 Cypress Gardens, Kingswinford, West Midlands, DY6 9TU |
| GOWEN, Robert William RESIGNED | Director | 12 Jul 2010 | 11 Feb 2011 | England | September 1971 | Bridewell Gate, 9 Bridewell Place, London, EC4V 6AW, England |
| HALPER, Manfred RESIGNED | Director | 12 Dec 1998 | 01 Nov 1999 | | January 1944 | 189 Avenue Blucher, Brussels 1180, Belgium |
| HERBERT, Graham RESIGNED | Director | | 31 Dec 1993 | | July 1943 | Staffords 12 Denehurst Close, Barnt Green, Birmingham, Worcestershire, B45 8HR |
| 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 |
| 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 | 30 Jun 2004 | 30 Oct 2007 | | August 1970 | 52 Beechwood Avenue, Farnborough, Kent, BR6 7EY |
| PEARCE, David Michael RESIGNED | Director | 01 Jul 1998 | 01 Nov 1999 | United Kingdom | January 1947 | 8 Deer Park Drive, Newport, Salop Shropshire, TF10 7HB |
| 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 |
| STRINGFELLOW, David George RESIGNED | Director | 01 Nov 1999 | 31 Jul 2004 | | July 1952 | Greenfields Occupation Lane, Kirkby In Ashfield, Nottingham, Nottinghamshire, NG17 8FD |
| TOLE, Robert John RESIGNED | Director | 14 Oct 2003 | 30 Sep 2009 | | May 1958 | 2 Styveton Way, Steeton, Keighley, West Yorkshire, BD20 6TP |
| YOUNGMAN, Frank William RESIGNED | Director | 31 Dec 1993 | 12 Dec 1998 | | July 1943 | 76 Greygoose Park, Harlow, Essex, CM19 4JL |