A vapour provision system (10) comprises an aerosol delivery section (14) configured to generate aerosol from liquid in a reservoir (16), an airflow path through the aerosol delivery section extending from an air inlet (30) to a mouthpiece (22), a battery section (12) configured to join to the aerosol delivery section and house a battery (26) to provide electrical power to one or more components in the aerosol delivery section, the battery section arranged laterally to at least a portion to the aerosol delivery section with respect to a direction of airflow through the mouthpiece, and an interface region (I) in which a surface of the aerosol delivery section faces a surface of the battery section when the sections are joined, the air inlet being located on the aerosol delivery section in the interface region so as to take in air that has been channelled over part of the battery section.
