| 10 April 2027 | Sub Brit Spring Meeting & AGM |
| 02-05 October 2026 | European Study Trip - Hamburg Members-only event, booking required via self-service |
| 19 August 2026 | Fort Widley (Cosham, Portsmouth) Members-only event, booking required via self-service |
| 15 August 2026 | East Kent Railway Tunnel, Military Command Post & Kent Mining Museum (TBC) |
| 03 August 2026 | Nothe Fort & Cold War Bunker, Weymouth Members-only event, booking required via self-service |
| 29 July 2026 | Sub Pub - London - Waterloo Station @1730 Member booking is via self-service, non-members should book here |
| 06-07 October 2026 | British Tunnelling Society Conference - London |
| 25-27 September 2026 | Hidden Earth - Llangollen, Denbighshire |
| 22-26 September 2026 | Hypogea 2026 - Tbilisi, Georgia |
| 18 July 2026-30 August 2026 | Cuckfield Royal Observer Corps - Open Days |
