Did any ship besides USS Enterprise receive an Admiralty pennant?
Short answerYes, Royal Navy ships used such pennants; Enterprise was unusual because the honor was presented to a foreign navy's celebrated ship.
NotesRoyal Navy Admiralty pennants marked the presence or association of senior Sea Lords and appeared on British ships in exercises and official service. Presenting one to USS Enterprise honored the US Navy's most decorated ship through a symbol British crews already understood. The rarity lay in extending the tradition to a foreign vessel rather than inventing a unique class of decoration for Enterprise. Navies use flags, ceremony, and inherited symbols to support morale and diplomatic soft power.