Who runs shops aboard Royal Navy warships

Which UK-based franchise is most likely to open a shop aboard a Royal Navy warship?

None. NAAFI, rather than a commercial franchise, runs shipboard shops.

Commercial franchises are unlikely to operate aboard Royal Navy warships. Shipboard shops are run through NAAFI, a specialist service organization, rather than ordinary retail chains. That arrangement keeps daily retail support inside an institution built for military communities. It also separates familiar high-street branding from the specialized support arrangements used at sea.