I met a couple of celebrities, whilst I was a cavern guide at Masson Cavern, 'Heights of Abraham', between 2000 - 2006. The first was Ken Livingstone (ex London Mayor, etc) who visited during August one year, as part of a group. The second was Ian Lavender (Dad's Army & Eastenders) who visited in September, with one other. The giveaway was his peaked cap with 'Pinewood Studios' on it! Both were very different, with Ken high-profile visiting in 'peak' season, whereas Ian kept a low-profile, visiting in a quieter month. Don't think they visited in same year, would need to check my diaries. Would have been nice to have got autographs and/or photos, but sadly got neither.
Cheers, Paul.
Note: I have met a few other celebs, including; Denis Law (ex footballer) and more recently Vicky Butler-Henderson (TV Presenter; Motorsport), but not caving related.