I remember it featured horse-drawn wagons delivering beer.
That isn’t something I saw when I lived in England in 1989-1990, but I can absolutely believe it in the 1950’s and possibly as late as the early 1970’s for a very special situation (maybe an old one-man operation brewer).
(My grandfather delivered milk by horse drawn wagons NYC in the 1930’s - the horse and yoke on the Teamsters Union symbol is something their members actually handled back in the day.)
Or, it could be a sign that it’s not quite our 1980’s London.
I’ve always loved this adventure, and the concept of crossover with 1980’s Lake Geneva, WI.