Re: a sort of oversized Meccano.
"There used to be a Dexion shop in N London, long gone, of course. It's right what they say: the variety has gone out of the High Street these days"
Twenty years ago I moved to a small town in which all the non-food shops were devoted to ladies clothes. Seemingly nothing at all for the blokes, at least not at the weekend.
Then I discovered a small corner of a department store devoted to car accessories (not needed once my banger days were over) and more exotic things like Dremel drills. Ah Bliss.
Unfortunately that place was eventually taken over by a large chain and the blokes' options diminished significantly.