Foreign designs for a larger Royal Navy

Which five foreign ship types would you procure for the Royal Navy?

A British-modified Zumwalt, Canberra-class LHDs, American support ships, Danish patrol vessels, and Japanese ocean-going diesel submarines.

The hypothetical shopping list focuses on missing capabilities rather than copying another navy wholesale. A Zumwalt would be modified to British requirements rather than accepted unchanged, while Canberra-class LHDs and American support ships would add flight decks, docks, and sustainment. Danish patrol vessels would cover lower-intensity presence work. Japanese conventional submarines complete the list because their ocean-going design better matches a globally deployed Royal Navy than boats optimized mainly for coastal defense.