During World War II and its aftermath, the following 45 escort aircraft carriers served in the Royal Navy. Some were converted from merchant ships by the Royal Navy, but many were constructed or converted by the United States Navy and sold to the RN or transferred under the Lend-Lease program. All of the ships survived the war apart from those noted here. After the war the surviving ships were returned to the U.S.; re-entered merchant service; were scrapped; or were transferred to other Navies.

The following escort carriers were converted from merchant ships (not to be confused with merchant aircraft carriers) by the Royal Navy:

• HMS Audacity (D10) - sunk 1941
• HMS Activity (D94)
• HMS Campania (D48)
• HMS Pretoria Castle (F61)

Nairana class:

• HMS Nairana (D05)
• HMS Vindex (D15)

The following escort carriers were constructed or converted from merchant ships by the United States and operated by the Royal Navy:

Long Island class:

• HMS Archer (D78), previously BAVG-1

Avenger class:

• HMS Avenger (D14), previously BAVG-2 - sunk 1942
• HMS Biter (D97), previously BAVG-3
• HMS Charger (D27), previously BAVG-4, later USS Charger (CVE-30)
• HMS Dasher (D37), previously BAVG-5 - sunk 1943

Bogue class:

• HMS Tracker (D24), previously BAVG-6
• HMS Battler (D18), previously USS Altamaha (CVE-6)
• HMS Attacker (D02), previously USS Barnes (CVE-7)
• HMS Hunter (D80), previously USS Block Island (CVE-8)
• HMS Chaser (D32), previously USS Breton (CVE-10)
• HMS Fencer (D64), previously USS Croatan (CVE-14)
• HMS Stalker (D91), previously USS Hamlin (CVE-15)
• HMS Pursuer (D73), previously USS St. George (CVE-17)
• HMS Striker (D12), previously USS Prince William (CVE-19)
• HMS Searcher (D40), previously CVE-22
• HMS Ravager (D70), previously CVE-24
• HMS Slinger (D26), previously USS Chatham (CVE-32)
• HMS Atheling (D51), previously USS Glacier (CVE-33)
• HMS Emperor (D98), previously USS Pybus (CVE-34)
• HMS Ameer (D01), previously USS Baffins (CVE-35)
• HMS Begum (D38), previously USS Bolinas (CVE-36)
• HMS Trumpeter (D09), previously USS Bastian (CVE-37)
• HMS Empress (D42), previously USS Carnegie (CVE-38)
• HMS Khedive (D62), previously USS Cordova (CVE-39)
• HMS Speaker (D90), previously USS Delgada (CVE-40)
• HMS Nabob (D77), previously USS Edisto (CVE-41) - damaged 1944; repaired post-war
• HMS Premier (D23), previously USS Estero (CVE-42)
• HMS Shah (D21), previously USS Jamaica (CVE-43)
• HMS Patroller (D07), previously USS Keweenaw (CVE-44)
• HMS Rajah (D10), previously USS Prince (CVE-45)
• HMS Ranee (D03), previously USS Niantic (CVE-46)
• HMS Trouncer (D85), previously USS Perdido (CVE-47)
• HMS Thane (D48), previously USS Sunset (CVE-48) - damaged 1945; never repaired
• HMS Queen (D19), previously USS St. Andrews (CVE-49)
• HMS Ruler (D72), previously USS St. Joseph (CVE-50)
• HMS Arbiter (D31), previously USS St. Simon (CVE-51)
• HMS Smiter (D55), previously USS Vermillion (CVE-52)
• HMS Puncher (D79), previously USS Willapa (CVE-53)
• HMS Reaper (D82), previously USS Winjah (CVE-54)