Heater blower control switch.

I've been changing my heater matrix this weekend, and when I removed the heater control panel found that the right hand switch, which controls the fan speed, had welded itself to the connector and burnt out. My fan only worked on settings 1, or 3, so I now know why.

The problem I now have is finding a replacement for Monday, as the car is off to a new home.

I live in Edinburgh - is there anywhere I could buy, beg, steal or borrow one from?

Thanks