Overall, the car rental company provided good service. They thoroughly explained the importance of purchasing insurance and related services to waive excess fees. However, after discussion, I informed them that I had already bought all necessary insurance from QEEQ.com, and they didn't push for additional sales. The company's parking lot is situated in a congestion charging zone in London, and the congestion charge is paid daily. If returning the car after office hours, you can leave the key at the designated spot.

Didn’t get the car we’d paid more to get & tried to give us a smaller car that wouldn’t have worked for us . Didn’t advise us of the £15 ( $30 AUD !)London congestion fee at both pick up & drop off and couldn’t really say where that as well as the low & ultra low emission zones were .