Thanks for the advice Adsum. My fee would in any case go to our local history and heritage group and the walk would feature locations pertinent to famous and infamous local residents, about whom I have written 2 little volumes, so the walkers may decide to buy a copy from me a the end of each walk.
During years of working at airports, I have met tons of famous people. My conclusions are that the truly big stars and important folks are actually reasonable people and quite affable mostly, but some of the minor 'tin-pot' celebs, such as local footballers or local tv presenters, can be right up themselves and arrogant. Some of the most patient, polite and charming folks I have met include Charlton Heston, Tony Curtis, Sacha Distel, Frank Zappa. The wife of a declining rock star regularly throws a tantrum at Heathrow if she is not escorted to the front of the passport queue. Once she shouted across to me and said 'Surely, I don't have to get in line behind THESE people', and the whole of the Kenyan Airways queue glared at her and then at me. 'You do now' was my response.