Gave up with Halfords for car parts quite a while back. Seems they are OK if you want over priced batteries, stereos of pimping bits, or anything for a push bike.
Their tools are pretty good though, have bought a few and not broken them yet.
Mind you also bought a few from the local "Indian" we sell everything shop, and ain't broken them yet either. Except a screw driver, they don't make good levers.
Mike