Out of all the popular cities in United Kingdom, Edinburgh is the cheapest city to rent a car in at just RM 79/day. Renting a car in Edinburgh is 27% cheaper than renting one in London where the per day rate is around RM 109. Other fairly inexpensive cities in United Kingdom to get a rental car in are: Manchester (RM 82/day), Glasgow (RM 83/day), and London (RM 109/day). While these cities typically have cheaper prices than the rest of the country, travellers looking to rent a car in London should expect to spend around RM 109/day on their transportation. The most popular city to rent a car in United Kingdom is London.