Hi Poppy. go to http://shop.ezee-fix.co.uk/index.html or try http://www.4directelectricals.co.uk. do a search for a door catch or a door interlock V. cheap part, should be easy to replace.
WASHING MACHINE SERVICE AND REPAIR MANUAL.
cut and paste the following address into your browser for more info. www.2ndwave.co.uk/manual.html
dan, February 2008