Two business cards for London outfits that I have.
"Past Present Toys", 862 Green Lanes, Winchmore Hill, London - 020 8364 1370. The old looking business card talks about obsolete diecast and tinplate toys etc and lists Scalextric with other brands.
The card shows funny opening hours so do phone first.
"Molly Mog", 97 Bishops Road, London - 020 7736 6686. Not sure why I have this card! I think I got it from a guy at a swapmeet who was doing some serious prices on Fly. Best phone again.
I've never made it to either of these so don't blame me if they aren't there or don't stock slots!