HMS Unicorn was an aircraft repair ship and light aircraft carrier; an "aircraft maintenance carrier".
Illustrious class
HMS Illustrious
Implacable class
HMS Implacable 1944
Colossus class
HMS Triumph 1950
The 1942 Design Light Fleet Carriers were designed and constructed by civilian shipyards to serve as an intermediate step between the expensive, full-size fleet aircraft carriers and the less expensive but limited-capability escort carriers. Perseus and Pioneer were modified to operate as maintenance carriers.
Majestic class
HMS Hercules
The 1942 design was modified to take more modern aircraft and these ships became the Majestic-class. Not completed until after the end of the war, most ended up purchased by other navies.