I spent a fascinating few months at Greenwich on a staff college thingy. The Navy were punctilious at having the first lieutenant at the gate as RN ships webnt up and down the Thames, taking or giving salutes according to the seniority of the skipper. As the college had a 2 star head it (she?) was senior to most captains, so the boat did the saluting.
We also had cabins instead of rooms, sat down to toast the queen and went overboard if we walked on the grass. Run ashores were fun though, but I digress.
As for saluting Blair? No thanks.