Carrentals.co.uk is a Car Hire comparison shopping engine. They use 50 different car hire search engines simultaneously from around the world, so you can get the best deals on car rentals. The site is for U.K residents looking to travel around the world using car hire, since all currency is printed in english pounds. You can trust them as a reliable source of finding prices, since they were awarded in 2007 best car travel website by travolution awards out of over 250 entries and beating out some big names. I tested the engine on a phoenix airport in the USA and it gave me 74 entries for a small car on a date in June.