A basic OPV needs an active production line

Would a basic OPV or mine-warfare mothership be a sensible British export design?

Yes, provided Britain orders it, sustains an active line, and gives buyers a real ship to assess.

A basic OPV or mine-countermeasures mothership could provide a useful British export design. The decisive requirement is an active production line, because buyers increasingly want a physical ship they can inspect instead of a paper proposal. Britain would therefore need to order the design for its own use and keep construction moving. Export credibility rests on domestic commitment and visible shipbuilding continuity.