https://www.hertz.com/rentacar/byr/index.jsp?targetPage=vehicleGuideHomeView.jsp
Hertz UK Fun Collection also includes Volkswagen Scirocco and Alfa Romeo Brera.
Example: One day Abarth 500 rental from London Heatrow in June (friday – saturday) 2011. Price starts 97.88 GBP per day including unlimited mileage, airport location fee, CDW, TP, vehicle licensing fee and taxes. You may get better price using AAA, Credit Card and other CDP discount codes and promotion PC coupons.
During Hertz Spring Offer 15. – 23.4 you can get Abarth 500 with prepaid rate 86.81 GBP per day.