ADUK Archive

I haven't used these, I got the link from the BMWCC forum, but they may be useful to someone :

http://www.usedcarexpert.co.uk/

I've also found www.parkers.co.uk an invaluable resource, especially their reviews and specs section

Chris

I was going to point people to parkers too, but they have an active forum aswell, infact it was on there that I found this place.
http://forum.parkers.co.uk
They have a small driving techniques section, but focus mainly on mechanics and buying/selling.