JET has successfully developed high power auxiliary systems: the Neutral Beam Injectors (NBI), the Ion Cyclotron Resonance Frequency (ICRF) waves and the Lower Hybrid Current Drive (LHCD) system [1]. The LHCD system has been the latest system developed and only a prototype system has been tested. This method is aimed at the control of the plasma current profile by driving a significant part of the plasma current alone or in combination with the other two additional heating methods.