"Ceylon", in poor condition, was given a major refit from March 1955 to July 1956 to suit her for further service until the s could enter service. A Type 960 long range air warning radar replaced the existing Type 281B, while the Type 277 height finder radar was upgraded to 277Q standard and the UA-1 ESM system was fitted. Fire control for the ship's 4-inch guns was provided by US-supplied Mark 63 systems, with radar mounted on the gun mounts, while short range anti-aircraft defence was provided by an outfit of 18 Bofors 40mm guns in five twin Mark 5 mounts and eight single Mark 7 mounts, with the Mark 5 mounts provided with Simple Tachymetric directors (STD).