(12:15pm 27/10/09) Have just finished fitting the replacement heating element and now have a working dishwasher again! The replacement part cost me £49.50 from a local electrical spares stockist: part no. 057684.
Procedure is basically a reverse from taking it out: remember to put the earth lead back on first as (on mine) it was somewhat tucked behind the unit when originally fitted and you will need to plug the supply back in at the front later. I found that it was easier to fit the hose with the U-bend first and then get the top hose back on by removing (temporarily) the motor condenser (capacitor) and tucking it out of the way (nut and spring washer to take off and replace later). This allowed my hand to better grip the conical rubber hose piece. I had to replace the original hose clips as previously stated - used terry clips this time (with screw tightener) to do this - make sure you can get in with the screwdriver to tighten them up. Whole of this procedure, replacing the bottom cover and front plinth and back into the kitchen took about 1 hour. It certainly saved me the call-out fee and only took 3 working days for the part to arrive at the suppliers despite the postal strike!
Andy Heslington, October 2009