Any question answered...

I was going to suggest the Cobra 'peanut butter' spanner from Hubjub, but he only has 14 mm ones in stock at the moment.

Get yourself to your local hardware shop and pick up a decent 15mm spanner for £1.50. Mine never leaves my bag. Or if you are feeling flash, buy one of the Campag Peanut Butter spanners, which can also be used to deal with crank bolts.

So a £1.50 isn't gonna snap on me? I was considering the velosolo tool as it's a fiver less than the peanut butter one...
http://velosolo.com/shoptool.html