The advert looks innocent enough but was never seen in the likes of Woman's Weekly - let alone, the Radio Times. Oh no, S.I.M Autodates only ever advertised 'specialist' European 'art' periodicals of the sort that could only be bought under the counter.
I imagine that the male to female readership of these magazines was about a thousand to one. So quite who or what you'd be meeting up with is anyone's guess. You do the math.