With the British dock yards busy with other priorities, it was realized that building full sized carriers would take a long time to finish so it was decided to build a series of light aircraft carriers.
The HSM Perseus and HMS Pioneer were finished as aircraft maintenance ships but could be converted into carriers. These were to specifically support the far off Pacific Fleet as there were few nearby facilities that could be used for repairing aircraft.
The HMS Glory was outfitted with 32 Hellcats and Fireflies to be used as a night fighter carrier. HMS Vengeance had Barracudas and Fireflies. HMS Colossus had Corsairs and Fireflies.
The flight deck had a catapult that could launch 14,000 lbs at 66 knots.
The Colossus class had two 45' x 34' elevators and each could lift 15,000 lb.
The hangar deck was 445' x 52' x 17' 6".