Thanks Watts and Rebecca, I redone the car this evening with a quick wash and dry and then used D&D again but this time I only sprayed it on the car and not the car and the cloth, 3 shots on each door, 5 on the roof and bonnet and little on the cloth for the other bits. Used another two cloths to buff and it was fine. Gave the car a great finish and all was well....
Drove past a demolition site after and had the car covered in a mixture of dust from the concrete and water from the water that they spraying on the site to keep the dust down. Fecking fuming but gave it a quick wash