Hi,
You could try this site http://www.espares.co.uk
I have repaired all my own white goods, and I use my local suppliers of these types of parts. See if there is someone local through yellow pages. The parts are easily changed usually a simple process of remebering colour connections and make sure the power is off, if you are unsure get the engineer to do it. I do believe the timer could be quite expensive as a replacement part so you could price a new machine, as once things start to go other problems could follow.
Regards
Ian