http://www.roads.detr.gov.uk/vehicle/consult/numberplates/index.htm

another number plate legal site?

http://www.hmce.gov.uk/notices/143.htm

Customs page covering goods imported by post

http://www.hmce.gov.uk/

HM Customs and Excise import duties

http://www.hmce.gov.uk/general/search/index.htm

Duty on importing

http://www.x-rates.com/tables/GBP.html

exchange rates for GBP

http://www.autotrader.co.uk/

UK second-hand car prices

http://www.exchangeandmart.co.uk/

UK second-hand car prices

http://www.topmarques.co.uk/

UK second-hand car prices

http://www.whatcar.co.uk/

UK second-hand car prices

http://www.parkers.co.uk/

UK second hand prices

http://www.east1.com/tvrcity/goodbye/index.htm

TVRs

http://www.petrolheads.co.uk

as it says .. petrolheads!

http://www.technicaltuning.co.uk/

tuning parts, HKS etc

http://www.tyres-online.co.uk

tyres available

http://www.tyresave.co.uk

good deals on wheels

http://www.gower-oaks.co.uk/

sell aftermarket CAI gauges

http://www.celtic-sheepskin.co.uk/

sell sheepskin hats in UK

 http://www.yhpt.co.uk/

Yoko tyres and TSW alloys 

http://www.mapblast.com/

UK maps down to street level

http://www.oilypages.com

Best UK car site for general stuff