Abstract: An electronic vapour generating device and cartridge for use therein is disclosed. The device comprises a housing defining a chamber for receiving a cartridge for holding a liquid for atomisation, and a power source for providing electrical power to an atomiser for atomising the liquid. The device further comprises an actuator which is reconfigurable between a first state in which the actuator electrically isolates the atomiser from the power source and a second state for enabling the generation of the vapour. The device further comprises a mouthpiece which is arranged to fluidly couple with the atomiser for communicating the vapour out from the device for inhalation by a user and which is slidably coupled to the housing. The mouthpiece is reconfigurable between a stowed configuration and an operative configuration and reconfiguration of the mouthpiece between the stowed and operative configuration is arranged to reconfigure the actuator between the first and second state.