Why British warships were absent from the Bikini tests

Why were no British warships used as targets in the Bikini atomic-bomb tests?

Britain was not offering ships for destruction, especially as Anglo-American nuclear cooperation was already fraying after their joint wartime effort.

If the United States wanted ships to destroy in the tests, it could use its own. British reluctance also sat within the postwar change in nuclear relations. Although the Manhattan Project had been a joint wartime undertaking, American factions soon sought to restrict the technology instead of continuing the alliance on the same terms.