They charged £195 for a small mark on the tire, which they found using a flashlight up close, plus an additional 20% service fee. It's a scam. I thought big companies wouldn't do this, but this one acted just like the small companies. I won't use them again. The radio couldn't be turned off, the navigation sound couldn't be turned on, the car didn't drive straight, and the steering pulled to the left. Make sure to take lots of photos as evidence when you pick up the car.

Got the car at Gatwick Airport and returned it to the same location. I purchased full insurance at the counter; the service was decent, and the return process was simple. The deposit was refunded quickly. The only issue was the lack of a paper contract. The staff said it would be emailed, but my Sina email never received it, which made me a little worried.