I have just fixed mine. It was the thermostat that needed resetting.
To help people troubleshoot, try these steps in event of no heat:
Step 1 - Feel outer casing on back of dryer, if this is hot then elements & thermostats are good and you need to clean the filter.
Step 2 - If the casing is cold to touch then switch off dryer and unplug, remove outer casing and visibly inspect elements for obvious breakages. If broken, then replace element set, available from spare part stockists at around £ 40.
Step 3 - If no breaks then look for the thermostat with a small hole in the rear in between the wires. Try resetting the thermostat buy using a pin to push into the hole until a click is heard, reassemble and try.
Step 4 - if still no heat by pass thermostats in turn by connecting wires directly, reassebling and trying for heat.
Step 5 - If this does not work it would seem to be a PCB fault.
pde2009
September 2008