Like AsianBabe said if your diet is in order theres a lot of quality things out there to boost you along in your fat loss quest. I personally I only like to use the occasional energy booster such as Stimulant X for an added boost a ways into a cut, because its smart to save the boosters for when you plateau instead of when your still making progress. Remeber though that if you diet isn't dialed in you will be wasting your money.
I am unaware if Nutraplanet ships to the UK but check out there site and you can find out easily. www.nutraplanet.com