| 03 May 2025 | Southern Water Nuclear Bunker + Giants of Steam, Brede & Winchelsea Cellars Members-only event, booking required via self-service |
| 09-12 May 2025 | Study Weekend in Brno, Czechia Members-only event, booking required via self-service |
| 23 May 2025 | Visit to Very Light Rail National Innovation Centre & Dudley Tunnel Members-only event, booking required via self-service |
| 21-22 June 2025 | Drop Redoubt Open Days, Dover |
| 28-29 June 2025 | NAMHO Conference - Conwy Valley |
| July 2025 August 2025 | Cuckfield ROC Post Open Days |
| 20-21 September 2025 | North Entrance Open Days, Western Heights, Dover |
| 26-28 September 2025 | SFES (Société Française d'Etude des Souterrains) Congress in Vendeuvre-du-Poitou |
