A few titles but you may want to shop around for lower prices:
Operation Pacific: The Royal Navy's War Against Japan, 1941-1945
https://www.amazon.co.uk/Operation-P...in+the+pacific
Old Friends, New Enemies. The Royal Navy and the Imperial Japanese Navy: Volume 2: The Pacific War 1942-1945: The Pacific War, 1942-45
https://www.amazon.co.uk/Friends-Ene...in+the+pacific
The British Pacific Fleet: The Royal Navy's Most Powerful Strike Force
https://www.amazon.co.uk/d/Books/Bri...in+the+pacific
The battle of the Atlantic has countless titles available, here ar a few:
The Battle of the Atlantic: How the Allies Won the War.
https://www.amazon.co.uk/Battle-Atla...f+the+atlantic
The Royal Navy in World War II
https://www.amazon.co.uk/Royal-Navy-...f+the+atlantic
A History of the Royal Navy: World War II
https://www.amazon.co.uk/History-Roy...8EXF0GVH89K68N
Churchill's Navy: The Ships, Men and Organisation, 1939-1945
https://www.amazon.co.uk/d/Books/Chu...+atlantic+wwii
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