The Admiral class underwent only one major revision in wartime. Aviation facilities were stripped and the available space repurposed, with the deck space turned into a boat deck. This freed space for an additional two octuple 2 pdr. AA cannons. Total AA armament was now 12 x 2 4.5 inch cannons, 8 octuple and one quadruple 2 pdr. mounts, and 42 single 20 mm canons, with all but the single 20s being radar assisted.
Near the end of the war the single 20s would be replaced by single 2 pdr. cannons, as the smaller cannon had proved virtually worthless against Kamikaze attacks.