I am going to UK in late march and early april. I want to hire a car with GPS in London Heathrow Airport. Which car hire company is the best?
And what kind of insurance should I join?
I'm not sure you will get a car with a GPS unless you go for really top range expensive cars. Avis or any of the other firms at the airport are reliable. As long as you have your passport etc, your insurance will be included in the cost of your rental.