When designed the King George V class was put down as a 28/29 knots ship, in a time when the average British Fast Fleet Carrier was designed for 30 knots, meaning a marginal speed difference. As such the ship as build was capable of going where the British Fleet Carrier went with no problems, since both had the same general speed already. The often named as such Carrier escort HMS Renown did never more than 29 knots herself after the complete reconstruction of the 30's and was considered a good ship as such for the proposed role.
In 1936, the time the King George V class was designed, as well as the Armored Fleet Carrier Program, which went on parallel, the role of the carrier was to follow the battlesquadron at close range and not the opposite around, so both were of similar capabilities in terms of speed already. As such the King George V class was quite well designed for her proposed role, she had to play, so no real need to alter it and delay her entering service as a result.
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