UK stocks of new copies seem to be almost gone. You can get second hand copies from Amazon. Play.com have a new copy for £35 including delivery. Advice after the horse has bolted, but use a no-cd exe with your next copy and keep the cd in the case.
Amazon.de have lots of new copies but not so simple to order if your German is as non existant as mine.
I'm still seeing copies of GTR2(that include GTL)in the Canadian electronics store Futureshop for $20.I have bought 3 over the last year for myself and friends.Don't know what shipping would be from Canada to the UK.