An aerosol provision system comprising a cartridge and a control unit, wherein the cartridge (2;200) comprises: an air channel extending from an air inlet for the cartridge (2;200) to an aerosol outlet via an aerosol generation region; a housing part having a mouthpiece end and an interface end, wherein the mouthpiece end includes the aerosol outlet for the cartridge (2;200) and the interface end includes an interface for coupling the cartridge (2;200) to the control unit; a reservoir within the housing part containing aerosolisable material for aerosolisation, wherein the aerosolisable material comprises a solid material; a heating element for heating aerosolisable material from the reservoir to generate aerosol in the aerosol generation region; wherein the cartridge (2;200) is configured such that air passing through the air channel is configured to pass from the air inlet into the aerosol generation region, and then out from the aerosol outlet; wherein the control unit comprises a receptacle that includes an interface arranged to cooperatively engage with the cartridge so as to releasably couple the cartridge to the control unit, wherein the control unit further comprises a power supply and control circuitry configured to selective supply power from the power supply to the heating element in the cartridge (2;200); wherein the aerosol provision system is configured to supply power from the control unit to the cartridge (2;200) wirelessly; wherein the aerosol provision system is configured to releasably couple the cartridge (2;200) to the control unit via a friction-fit; and wherein the cartridge is couplable to the control unit in more than one orientation. an air channel extending from an air inlet for the cartridge (2;200) to an aerosol outlet via an aerosol generation region; a housing part having a mouthpiece end and an interface end, wherein the mouthpiece end includes the aerosol outlet for the cartridge (2;200) and the interface end includes an interface for coupling the cartridge (2;200) to the control unit; a reservoir within the housing part containing aerosolisable material for aerosolisation, wherein the aerosolisable material comprises a solid material; a heating element for heating aerosolisable material from the reservoir to generate aerosol in the aerosol generation region; wherein the cartridge (2;200) is configured such that air passing through the air channel is configured to pass from the air inlet into the aerosol generation region, and then out from the aerosol outlet; wherein the control unit comprises a receptacle that includes an interface arranged to cooperatively engage with the cartridge so as to releasably couple the cartridge to the control unit, wherein the control unit further comprises a power supply and control circuitry configured to selective supply power from the power supply to the heating element in the cartridge (2;200); wherein the aerosol provision system is configured to supply power from the control unit to the cartridge (2;200) wirelessly; wherein the aerosol provision system is configured to releasably couple the cartridge (2;200) to the control unit via a friction-fit; and wherein the cartridge is couplable to the control unit in more than one orientation.