
Have you tried asking if Halfords can get them for you?
They are the only shop near me that stocks GT now. Apart from Kings Cycles, but I would heartily recommend you never spend a cent in there or they will charge you a quid for your right a refund of the faulty product.
Sorry, rant over. Try emailing hotwheels too, they are quite helpfull.
Russell@hotwheels.uk.com