| BARLOW, Christopher Raymond ACTIVE | Secretary | 13 Apr 2015 | | | | Whitehill House, Windmill Hill Business Park, Whitehill Way, Swindon, SN5 6PE, England |
| ABEL, Frank, Dr ACTIVE | Director | 01 Oct 2024 | | Germany | May 1970 | Hochtief Infrastructure Gmbh, Alfredstrasse 236, 45133 Essen, Germany |
| JACKSON, Lawrence ACTIVE | Director | 31 Jul 2017 | | Germany | September 1964 | Whitehill House, Windmill Hill Business Park, Whitehill Way, Swindon, SN5 6PE, England |
| REFISCH, Stephan Dieter ACTIVE | Director | 14 Dec 2023 | | Germany | May 1974 | Whitehill House, Windmill Hill Business Park, Whitehill Way, Swindon, SN5 6PE, England |
| JORDAN, Alan Ronald RESIGNED | Secretary | | 25 Jul 2001 | | | 5 Addington Close, Devizes, Wiltshire, SN10 5BE |
| LLOYD, Tim RESIGNED | Secretary | 25 Jul 2001 | 13 Apr 2015 | | | 12 Freeland Place, Bristol, BS8 4NP |
| STUBER, Wolfram RESIGNED | Secretary | 27 Nov 2001 | 01 May 2002 | | | Stueber, Braecher Heide 28, Wiehl, 51674, Germany |
| BALTHAUS, Hansgeorg, Dr RESIGNED | Director | 01 May 2002 | 29 Jun 2005 | | May 1957 | Venn Str 162, Dusseldorf, 40627, FOREIGN, Germany |
| BRIXEL, Christof Jens RESIGNED | Director | 24 Apr 2015 | 31 Mar 2018 | Germany | January 1956 | Whitehill House, Windmill Hill Business Park, Whitehill Way, Swindon, SN5 6PE, England |
| COX, Sally Helen RESIGNED | Director | 13 Apr 2015 | 05 Sep 2017 | England | December 1967 | Whitehill House, Windmill Hill Business Park, Whitehill Way, Swindon, SN5 6PE, England |
| DENZEL, Christoph Heinrich, Diplom Ingenieur RESIGNED | Director | 01 Jul 1992 | 01 May 2002 | | July 1942 | Brucker Holt 57, Essen 1, North Rhine Westphalia 4300, 4300, Germany |
| FORREST, Leslie Allan RESIGNED | Director | | 01 May 2002 | | May 1941 | Kas Gloucester Road, Alveston, Bristol, BS35 3RG |
| FUNKE-OBERHAG, Hans Wilhem RESIGNED | Director | 24 Jun 2007 | 22 Oct 2013 | Germany | November 1949 | Uferweg 16, Dattelu, Nru 45711, Germany |
| GRUETTNER, Klaus Richard Walter RESIGNED | Director | 12 Feb 2020 | 16 Nov 2023 | Germany | June 1961 | Hochtief Infrastructure Gmbh, Alfredstrasse 236, 45133 Essen, Germany |
| HEBGEN, Stephan RESIGNED | Director | 27 Nov 2001 | 22 Oct 2013 | Germany | February 1965 | 21, Schimmelhofer Ring, Essen, 45139, Germany |
| IVES, Stephen Richard RESIGNED | Director | 01 May 2002 | 27 Aug 2008 | England | January 1947 | 8 West End, Melksham, Wiltshire, SN12 6HJ |
| JACKSON, John Leonard RESIGNED | Director | 27 Aug 2008 | 30 Apr 2015 | England | April 1950 | Dane Ridge, 6 Bracknell Lane, Hartley Wintney, Hook, Hampshire, RG27 8QQ |
| JONAS, Alexander RESIGNED | Director | 09 May 2006 | 29 Mar 2007 | | June 1960 | Meiningar Weg 10, Dusseldorf, 40627, FOREIGN, Germany |
| JORDAN, Alan Ronald RESIGNED | Director | 01 Jul 1992 | 25 Jul 2001 | England | June 1946 | 5 Addington Close, Devizes, Wiltshire, SN10 5BE |
| KLEINBRAAM, Klaus Dieter RESIGNED | Director | | 27 Nov 2001 | | August 1943 | August-Schmidt Strasse, 74 4330 Mulheim, Ruhr, Germany |
| LAUE, Jorg RESIGNED | Director | 23 Jul 2015 | 14 Dec 2023 | Germany | July 1972 | Hochtief Infrastructure Gmbh, Opernplatz 2, Essen, 45128, Germany |
| LLOYD, Tim RESIGNED | Director | 25 Jul 2001 | 30 Jun 2015 | England | June 1952 | 12 Freeland Place, Bristol, BS8 4NP |
| REINITZHUBER, Karl, Dr RESIGNED | Director | 09 May 2006 | 29 Mar 2007 | | January 1967 | Hans-Katzer-Str.27, Koeln, 50858, Germany |
| REINKE, Ullrich RESIGNED | Director | 09 May 2006 | 05 Jun 2013 | Germany | February 1953 | Am Kapelleuberg 10, Bremeu, 28259, Germany |
| ROHR, Martin, Dr-Ing RESIGNED | Director | 25 Oct 2000 | 27 Nov 2001 | | June 1955 | Am Lindenberg 6, Braunschweig, 38104, Germany |
| RUMP, Hans Dieter RESIGNED | Director | | 30 Jun 1992 | | August 1938 | Steinwerth 10, 4000 Dusseldorf, Germany |
| STUBER, Wolfram RESIGNED | Director | 27 Nov 2001 | 01 May 2002 | | May 1943 | Bracher Heide 28, Wiehl, Germany |
| TAURIAINEN, Riku RESIGNED | Director | 23 Jul 2015 | 12 Feb 2020 | Germany | November 1963 | Hochtief Infrastructure Gmbh, Europe West, Opernplatz 2, 45128 Essen, Germany |
| VON WAHL, Sebastian RESIGNED | Director | 20 Nov 2003 | 09 May 2006 | United Kingdom | June 1964 | Viewmont, Starhill, Nailsworth, Gloucestershire, GL6 0NJ |
| WASSMANN, Dirk RESIGNED | Director | 16 Nov 2023 | 01 Oct 2024 | Germany | March 1961 | Corporate Headquarters, Alfredstrasse 236, 45133 Essen, Germany |
| WILTFANG, Uwe RESIGNED | Director | 29 Jun 2005 | 09 May 2006 | | March 1950 | Mozavtstv. 102, Mettmann, Nr Essen G-40822, FOREIGN, Germany |