Hotpoint TDC32 not heating?

Dryer stopped heating about 6 months ago, I found one of thermostats had gone so replaced both as recommended. Worked fine but not been used over summer and now stopped heating again.

Thermostats seem fine, and dryer still doesn't work if they are shorted out...can anyone tell me if I now need to check this 'fluff switch' and where to find it? Or is it more likely element has gone?