So I called maybe around 15 stores NW of Birmingham, none in stock. :( They sounded like they never had it/heard of it. Some stores told me that I'm the 2nd/3rd/4th to call asking for this, so I just thought I'd save everyone some effort :) ...
http://www.meccano.com/product/p10941/torre-eiffel-y-puente-de-brooklyn Reference #15305. Maybe it helps if phoning the store to check if it's in stock.
Is this the newer half scale stuff that's really fiddly?
I've tried to make Meccano with my 7 year old a couple of times...hateful hateful stuff. The polar opposite to Lego, particularly the instructions.