We did remove the ‘Royal Navy’ from our fuselages for some reason!
We still had Royal Air Force on ours - although they were all "giant Army choppers" to the meeja. Did they not think that the IRA might have access to Janes - or at least I-Spy Helicopters!
The only time I recall "Royal Navy" being removed/obscured from a Wessex 5 was the one that "fell over" at Otterburn on Sky Warrior in '72. It was trucked out on a RAF Queen Mary, but - for some reason (!!) - hid its provenance.........