| CAMERON, Fergus Euan ACTIVE | Secretary | 04 May 2018 | | | | 25, Marlborough Road, Lancing Business Park, Lancing, BN15 8TN, England |
| BOCCON-GIBOD, Julien ACTIVE | Director | 15 Sep 2023 | | France | June 1968 | 25, Marlborough Road, Lancing Business Park, Lancing, BN15 8TN, England |
| CAMERON, Fergus Euan ACTIVE | Director | 04 May 2018 | | England | January 1975 | 25, Marlborough Road, Lancing Business Park, Lancing, BN15 8TN, England |
| NADOBNY, Pascal ACTIVE | Director | 12 Apr 2023 | | France | February 1959 | Addev Materials, 30 Quai Perrache, Lyon, 69002, France |
| SINCOCK, Richard James ACTIVE | Director | 20 May 2026 | | England | April 1986 | 25, Marlborough Road, Lancing Business Park, Lancing, BN15 8TN, England |
| SHIPLEY, John David Joseph RESIGNED | Secretary | | 11 Jan 2005 | | | Pounsley Mill, Blackboys, Uckfield, E Sussex, TN22 5HP |
| WILLS, Colin Patrick RESIGNED | Secretary | 11 Jan 2005 | 04 May 2018 | | | 10 Arlington Close, Goring By Sea, West Sussex, BN12 4ST |
| BANCEL, Jean-Jacques RESIGNED | Director | 12 Apr 2023 | 15 Sep 2023 | France | July 1968 | Addev Materials, 30 Quai Perrache, Lyon, 69002, France |
| BARWICK, Steven James RESIGNED | Director | 04 May 2018 | 14 Nov 2025 | England | May 1971 | 53, Spencer Road, Lancing Business Park, Lancing, BN15 8UA, England |
| HALLS, Simon Edward RESIGNED | Director | 01 Jun 2000 | 15 Mar 2002 | | July 1957 | Greers, Broadwater Down, Tunbridge Wells, Kent, TN2 5PE |
| HODGES, Robert Francis RESIGNED | Director | | 30 Jun 2000 | | March 1941 | Willow Farm, Arundel Road, Patching, Worthing, West Sussex, BN13 3UQ |
| MELLOR, Paul Anthony David RESIGNED | Director | 01 Jan 1999 | 05 Oct 2000 | United Kingdom | September 1955 | 2, Vine Cottages, The Street, Rodmell, United Kingdom, BN7 3HE, United Kingdom |
| POIRIER, Franck RESIGNED | Director | 12 Apr 2023 | 15 Mar 2026 | Spain | January 1967 | Addev Materials, 30 Quai Perrache, Lyon, 69002, France |
| PUNTER, Michael Arthur RESIGNED | Director | 23 Dec 2002 | 12 Apr 2023 | England | January 1953 | Orchard Rise, Waste Lane, Kelsall, Tarporley, CW6 0PE, England |
| SHIPLEY, Anthea Stephanie RESIGNED | Director | | 11 Jan 2005 | | November 1946 | Pounsley Mill, Blackboys, Uckfield, E Sussex, TN22 5HP |
| SHIPLEY, John David Joseph RESIGNED | Director | | 11 Jan 2005 | United Kingdom | September 1943 | Pounsley Mill, Blackboys, Uckfield, E Sussex, TN22 5HP |
| SHIPLEY, Joseph Gordon RESIGNED | Director | | 25 Jan 1993 | | November 1909 | 6 March Square, Chichester, West Sussex, PO19 4AN |
| THOMPSON, Michael George RESIGNED | Director | | 18 Dec 2003 | | January 1944 | Oakleigh School Lane, North Mundham, Chichester, West Sussex, PO20 6LA |
| WILLS, Colin Patrick RESIGNED | Director | | 04 May 2018 | England | April 1953 | 10 Arlington Close, Goring By Sea, West Sussex, BN12 4ST |