I have an S2 and have been told its a Fiesta part, mine is also broke! The local TVR garage (Offord) are fixing it for £35 (If they ever get the part in stock that is???)
I found it on the net. It's sold by RS, parts nr. 336-602, costs about 2 Euro. Only problem: RS only sells to companies, not to private persons. Have to think about it to overcome this problem. 35 pound seems a bit much to me.
In the Netherlands RS does not sell to individuals. Phoned the company, the lady I spoke to was willing to accept the order, so within 1 or 2 days the switch should be here.
