The extended warranty isn't worth the paper its written on as they use 'signs of corrosion' as an excuse for not repairing + keep the car for 2 weeks without calling back following long conversations with different people on the phone to try to resolve the situation. Video or part showed slight oxidation which would surely appear on most parts underneath a car...certainly wasn't a legitimate reason to renege on a £400 policy! Even if they had decided not to honour the claim the service was atrocious and took several really long phone calls made by me just to get the car back.