Well thanks for all the replies,,,,I have done most of all that has been suggested and adjustment has been done as per the how to's.As mentioned new drums and shoes the only thing I can think of the shoes must be of very poor quality,but what make they are I do not have a Scooby.What bought it to a head was yesterday on the ferry ready to offload we were on the ramp when the ramp was lowered the hand brake would not hold the car even when pulled up as far as I could.
So I think the next thing is to swop the shoes with a known good quality set and start again.