Heater element or somthing like that has failed?

I have a Creda Reversair tumble dryer It has a heat select rocker switch of high or low. It was brand new about 18 months ago. It would appear that we're not getting any low or high heat. I've managed to get the top off and can see 2 wires coming off the switch, a white and a blue/white. Unfortunatley i decided to look at the problem about an hour before leaving for work.
So can anybody tell me is it likely to be the switch or is there something like a heater element OR something intirely different to what i thought. Cheers