From 1940 to 1942, he commanded the destroyer HMS Campbell in the Channel and North Sea, seeing action against the German battleships Gneisenau and Scharnhorst as well as the heavy cruiser Prinz Eugen, for which he was appointed a Companion of the Bath on 27 March 1942[6] and was also awarded a Distinguished Service Order (DSO) and was mentioned in despatches.

In July 1942, he was given the command of a destroyer depot ship, HMS Tyne, and served as a chief staff officer to a Rear Admiral in charge of protecting Soviet convoys in the North Sea.

[7] In December 1943, Pizey was appointed Director of Operations Division (Home) for the Admiralty, commanding HMS President.

[8] In October 1951, Pizey replaced Vice Admiral Edward Parry as the last Commander-in-Chief of the Indian Navy.

He was honoured with the Order of the People's Army upon the state visit of Josip Broz Tito to India.

He was promoted to a Knight Grand Cross of the Order of the British Empire in the 1957 New Year Honours,[11] and retired in 1958.