Some wonderful answers, I've lol'd all day, thank you.
There are, unsurprisingly, NO correct answers so far, though one answer was in exactly the right area.
So, a clue.
Well, as Tighty seemed to know, the location was what he described as "Ding's Colonic Clinic, in Milton Keynes".
In fact, it's more of a "well-being" Clinic, an assemblage of individual health & beauty clinics, all offering different services, products, or processes, designed to make folks feel & look better. A truly scary place, & if Ding grants me permission to Upload, I have some interesting 'photos of what goes on there. No Colonic pics, you'll be delighted to hear. And see.
The occasion was a sort of "Open Day", with champers & sweetmeats, attended by a whole gathering of "beautiful people" who are evidently into that sort of thing.
Our be-gloved man was a guest, & it could be said he works in "the industry" - health & beauty, shall we say, more "beauty" than health in his case.
A most odd job, one I've never heard of before.
Post any pics you like Mr Kendall