DH, I and colleagues, have met the following through work:
Joan Collins, very organised and expected you to be too, but very nice. Our office was doing a charity fun run and had a poster up about it. A couple of days after she had been in, we received a donation for the charity and some signed items so we could auction them off to raise more funds.
Pierce Brosnan, lovely, asked by the computer to provide ID, more than happy to do so.
Deborah Meaden, not the greatest experience, although she does a lot of local charity work.
Chris Cbeebies Jarvis, met him on a number of occasions as related through marriage. Lovely, but his first name is really Martin, which took some getting used to.
Simon Cowell was very nice to a trainee who was star struck and out of her depth, when she had to cover for a colleague.
Madonna is nice, but super efficient according to friend who dressed her for a video shoot.
Richard and Judy very nice, Richard very chatty, Judy more subdued but pleasant.