| 1910 | C35 | Completed |
| 1910 | C36 | Completed |
| 1915 | E53 | Laid Down |
| 1915 | E54 | Laid Down |
| 1916 | E41 | Completed |
| 1916 | W3 | Completed |
| 1917 | WWI | German 'unrestricted' submarine warfare begins. |
| 1917 | E48 | Completed |
| 1917 | K2 | Completed |
| 1917 | K6 | Completed |
| 1917 | K7 | Completed |
| 1917 | K11 | Completed |
| 1918 | E50 | Mined and sunk in the North sea |
| 1942 | Thunderbolt (N25) | HMS Thunderbolt torpedoes and sinks the Italian merchant Absirtea about 6 nautical miles off Cape Dukato, Greece. |
| 1943 | Turbulent (N98) | HMS Turbulent torpedoes and sinks the Italian merchant Pozzuoli off Cape San Vito, Sicily, Italy. |
| 1943 | Una (N87) | HMS Una damages two sailing vessels with gunfire in the Gulf of Hammamet, Tunisia. Una had to break off the attack due to gunfire from shore batteries |
| 1943 | Subtle (P251) | Laid Down |
| 1945 | Spark (P236) | HMS Spark sinks a Japanese coaster and a barge that this coaster is towing and a Japanese tug with gunfire in the western part of the Java Sea. Also another coaster is forced ashore on Panjang Island. |
| 1945 | Tantalus (P318) | HMS Tantalus sinks a Japanese tug and three barges in the southern part of the South China Sea. |
| 1953 | Sirdar (P226) | Sirdar was swamped by floods while in dry dock at the naval dockyard at Sheerness, Kent, and later sank. |
| 1954 | Sidon (P259) | Transferred to 5th Submarine Squadron pending refit. |
| 1962 | Otus (S18) | Laid Down |
| 1993 | Vengance (S31) | Laid Down |
