British export warships were strong without surpassing home designs

How capable were foreign warships built in British yards and later taken into Royal Navy service?

Most were capable and could outmatch many rivals, though they generally would not have surpassed Britain's own contemporary warships.

An audience prompt asks about state-of-the-art ships built in British yards for Japan, South American customers, and Turkey and then acquired by the Royal Navy at the outbreak of war. Most were capable designs, though they would not usually have beaten contemporary ships built specifically for the Royal Navy. They could still outperform much of the opposition. British commercial yards were exporting serious naval capability.