There is provided a fluid delivery system (100), comprising a pump (102) for pumping fluid from a cartridge (400) to an outlet. The pump comprises a housing (302), a cartridge which can be removably attached to the housing, and a switch (308) for activating the pump. The switch is arranged such that attaching the cartridge to the housing activates the switch to automatically activate the pump. The system may also include a control unit for wireless connection with the pump.
