While I was training to be a croupier (and ended up working at Charlie Chesters Casino in Archer Street Soho 89-92 so we might have crossed paths Katellwood) I worked in a pub called the John Snow (also well known in it's own right for a different reason and which had a weird half door 'tween the 2 seating areas that saw many a nose - only the bottom half opened about mid chest height; odd the small details you remember), which was close to Carnaby Street and some recording studios nearby, so I met quite a few well known faces, but apart from greeting them by (Mr) name if I recognised them, taking their orders and serving, I never bothered them with any other fan type stuff, because most of the time it was obvious all they wanted was a quiet drink - being an off the main streets pub it was always quieter during the day than many others. Sometimes I'd ask them if they minded signing the guest book, sometimes not.
About the only thing of note I remember was Craig Charlies (Red dwarf, Corrie) who was alone, had 2 pints of bitter in one of those bitter mugs with a handle, which seemed important as he asked if we had any, and as he left he said "thanks a lot, mate" and left a £5 tip on the bar.
Oh and Toby Stephens of recent Black Sails fame, we went to school together. Had no idea he was Dame Maggie Smiths son, none of us did as I recall but he did attend a reunion after his James Bond badguy gig and was suitably english and humble regarding his newfound "fame".
Oh and another - Honeysuckle Weeks, from Foyles war, she's the daughter of my english teacher at the same school, she was a mere child at the time, but after seeing her name in the credits, knowing there can't be that many of that name around, I had to check and contacted the school who confirmed it, and yes she really does talk mostly like that, as her father did as well and was quite a luvvie running the dramatic society. Bit of a bowie lookalike he was too now I think about it.