For the best deal on a 4WD buggy from Tamiya i can highly recommend the DB01R. Many threads are here where the DB01R is mentioned it is a very good club level racer that has all Hop Ups already installed for a very nice.
Check out this shop. They have the DB01R (84100) as well as the TRF201 and TRF502X in stock, thec ship to the UK and speak English and from what i´ve heard a package only takes about 4 days to be in the UK.
http://www.modellbau-seidel.de/index...+Fahrzeuge.web