Simply a Great Experience
I took out the policy with Simply Excess after receiving a recommendation to use a comparison site for these excess policies from Martin Lewis and MoneySavingExpert.com. The whole process was really simple, and fortunately I didn't need the policy as (surprisingly for 1000 km of Italian driving) the car was returned unscathed. However, the communications and information you receive from Simply Excess are really useful. I'd certainly use them again any time I'm looking to hire a car.