Hotpoint Aquarius TDC32 Stops Working after 5/10 mins?

Our Hotpoint Aquarius TDC32 tumble Dryer works for about 5/10 mins but then keeps stopping. If you wait a while or turn it off and on again it works for a few minutes again. Its also seems to be heating up ok so not sure if it's thermostats, relay or something else. Can anyone help?