| 1912 | 1911 - 1949: Alecto (J10) | Commissioned |
| 1915 | 1951 - 1946: Talbot | Completed |
| 1940 | Parthian (N75) | Italian submarine Diamante is sunk by HMS Parthian off Tobruk. |
| 1940 | Salmon (N65) | HMS Salmon fires two torpedoes against a German convoy about 15 nautical miles south-west of Egersund, Norway. Both torpedoes missed their intended targets. |
| 1940 | Clyde (N12) | About 40 nautical miles north-west of the island of Halten, Norway. HMS Clyde hit the German battleship Gneisenau in the bow with one torpedo. |
| 1940 | Tigris (N63) | Completed |
| 1943 | United (P44) | HMS United torpedoes and sinks the Italian merchant Olbia about 20 nautical miles south of Cape Spartivento, Italy. |
| 1943 | Volatile (P96) | Launched |
| 1944 | Storm (P233) | HMS Storm attacks the German submarine U-1062 with torpedoes in the Malacca Strait. The torpedoes however miss their target. The u-boat had left Penang the previous day. |
| 1944 | Ultor (P53) | HMS Ultor torpedoes and sinks the German tug Cebre south of Cannes, southern France. |
| 1944 | Urtica (P83) | Completed |
