LONDON HEATHROW. London Heathrow Branch. AVOID, AVOID AND AVOID. Yes they probably are the cheapest but will sting you when you return the car with fake allegations of car damage. I have been hiring cars for over 15 years and this was the first time using Green Motion. Pickup was great but a nightmare on returning the car. Green motion claimed dent to the boot door which neither me or 5 others customers could view. Employee then stated the dent can only be seen when the boot is open and you stand at one specific angle....really!? In the time I was there (45 min) - there were at least 3 other customers with similar issues. One customer was accused of causing a scruff mark to a tyre which in fact was a white mark off the road. AVOID - pay the extra £20-30 and go to a reputable firm,.