Hotpoint TDL30P Dryer, keeps tripping the electrics?

My Hotpoint TDL30P Dryer trips out the electrics 2 or 3 times,
and then seems to run as normal, but this will happen every time the Dryer is used!!
The Dryer is 3 yrs old and has only just started tripping the electrics.

Any help or suggestions would be appreciated.