Removed water drainage pipe accessed by removing left side panel and cleaned out massive build up of limescale.
Cured problem.This is the quality of water we are paying increasing bills for in the London area. No wonder investors are queuing up to buy water company cash cows - huge profits -no liability- minimal service provided.
Hope this helps someone else hesitate to dispose of a perfectly functional appliance
Mike Sutton (Husband of Doreen), November 2006