My mate saw Joan Collins passing through Heathrow Airport once surrounded by about 10 airport security staff. Approached her for an autograph expecting to be ignored but was suprised when not only did she stop and sign but also stood and spoke with him for about a minute about the holiday he had just come back from. By then of course about a dozen other people had approached and she signed autographes for all of them. Lovely lady. Hopefully it wasn't a one off.