She returned to active duty in June and for the rest of the war, she served with the Rosyth Escort Force protecting important shipping convoys in home waters. Part of this duty included screening the maiden voyage of the battleship from Tyne to Rosyth. As "Westminster" had been converted for use as an escort and fitted with suitable high angle 4 in armament for anti-aircraft defence, she was retained for the protection of the vital East coast convoys and not deployed for other use such as support of the Allied landings in Normandy and service escorting of Russian convoys. She was also fitted with other weapons for attacks on E-boats as well as with special radio equipment for communication with aircraft and other escorts.