Various party leaders when I used to supply electronic message signs to party conferences in the 80/90’s, Sir Robin Day asked us to “go away” very nicely when he needed a balcony box we were working in to do a piece to camera 🙂
Accidentaly was sat in Cilla’s seat on a flight from London to Newcastle and had to move!, same flight got talking to Rick Wakeman and Nina Carter in departures before the flight, had bumped into him in C&A a couple of weeks before when he was playing at Newcastle City Hall.
Slobodan Miloševiće (president of what’s now Croatia) when I was working in the Federal Parliament in Belgrade just before it all kicked off!.

Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!