Thanks for your replies. Last night I burned much midnight oil (or to be more precise Octopus Economy 7 electricity) checking every one of the WW2 and earlier warship 1/600 scale model listings and here is my definitive list:
HMS Cossack (Tribal-class Destroyer)
HMS Hood
Bismarck
HMS Suffolk
HMS Ark Royal
Prinz Eugen
All of the above have been converted to 1/1200 scale and appear in the "Sink the Bismarck" set.

HMS Hotspur (standard H-class Destroyer)
HMS Campeltown (ex-US Destroyer modified to resemble a German Torpedo Boat)
Narvik type German Destroyer
These three Destroyers were also grouped into a set of "Four Destroyers" together with HMS Daring which was designed but not completed in WW2.

HMS Ajax (Leander-class light cuiser)
HMS Manxman (fast minelayer)
HMS Belfast (Light Cruiser after repairs, 1942 on)
Graf Spee (Armoured Ship)
Scharnhorst (Battleship, 1938-39 only)
Tirpitz (German Battleship, late 1941 on)
HMS Nelson (Battleship 1937 on)
HMS King George V (Battleship, 1940-42)
HMS Repulse (Battlecruiser 1938-41)
HMS Warspite (Battleship, 1937-43)
HMS Iron Duke (Battleship 1913-1920s)
In my opinion, it should be possible for Hornby to produce Airfix kits in 1/1200 scale of all the above ship models.