yes I did wind the pistons back.I have booked the car in at a ford dealer on Thursday to check it out but I have no faith in them, and think they will find nothing wrong and charge me for the privilege, so I will probably try removing and re fitting the pads tomorrow making sure I pump the brakes before operating the handbrake and see if it resolves the problem, otherwise I will have to just wait and see what the dealer says. Meanwhile, thankyou very much for your help.