Just wanted to say thank you to folder fanatic for his/her advice.

I ended up with the El Bolso in the end - I managed to find it for just £20 (or US $31) and have it shipped to my local shop for free. I've tried it and it really is an absolute doddle - just lay it on the ground, put the folded bike in it, lift the sides and cover.

It should be perfect for my needs - buses, trains, shops - and it folds down surprisingly small when not in use so it's easy to carry in a rucksack.

Derek

p.s. I guess we'll never find out what happened with Chagzuki....