A vapour provision system comprising: a cartridge part (cartomiser) comprising a vaporiser for generating a vapour from a vapour precursor material for inhalation by a user； and a device part (control unit) comprising a power supply, such as a battery, for supplying power to the vaporiser across an electrical interface established between the cartridge part and the device part when the cartridge part is coupled to the device part for use. The electrical interface is provided by sprung pins in one of the cartridge part and the device part and a circuit board with contact pads in the other of the cartridge part and the device part. The sprung pins and contact pads are arranged in cooperative alignment so that respective ones of the sprung pins are in biased contact with corresponding ones of contact pads when the cartridge part is coupled to the device part for use.
