1car1
http://www.1car1.com/

Affordable Car Hire
http://www.affordable-car-rentals.co.uk/

Alamo
http://www.alamo.com/

Avis
http://www.avis.co.uk/

Bespokes
Exotic car hire specialist.
http://www.bespokes.co.uk/

British Car Rental
http://www.bcvr.co.uk/

British Vehicle Rental and Leasing Association
Contains consumer guides and information for anyone hiring a car in the UK or abroad.
http://www.bvrla.co.uk/

Budget
http://www.budget.co.uk/

City Car Club
The UK's leading car sharing club.
http://www.citycarclub.co.uk/

Dollar
http://www.dollar.co.uk/

Dream Car Hire
Hire a prestige motor.
http://www.dreamcarhire.com/

Easycar
http://www.easycar.com/

Economy Vehicle Hire
http://www.economyvehiclehire.co.uk/

Enterprise
http://www.enterprise.com/

Eurodrive
http://www.eurodrive.com/

Europcar
http://www.europcar.co.uk/

Eurostyle
Luxury and sports car hire specialist.
http://www.eurostyle.uk.com/

Hertz
http://www.hertz.co.uk/

Kendall
http://www.kendallcars.com/

Man and Van
http://www.man-and-van.co.uk/

National
https://www.nationalcar.co.uk/

Practical Car & Van Rental
http://www.practical.co.uk/

Sixt
http://www.e-sixt.co.uk/
http://www.kenning.co.uk/

Sixti
http://www.sixti.com/

The Garage Car Rental
http://www.thegaragecarrental.co.uk/

Thrifty
http://www.thrifty.co.uk/

United Kingdom Limousine Directory
Just as it says.
http://www.limousine-directory.co.uk/

WhizzGo
Pay as you go car club.
http://www.whizzgo.co.uk/

Woods
http://www.woods.co.uk/