A metered dose dispensing valve for dispensing metered dose volumes of an aerosol formulation from an aerosol container comprising: •a first valve body (213) defining in part a metering chamber (212) •a compliant biasing member (215) •a valve stem (214) passing axially through the metering chamber, movable relative to the chamber between non-dispensing and dispensing positions, and biased from its dispensing position towards its non-dispensing position by the compliant biasing member and •a second valve body (230) defining a non-compliant portion (991) and a compliant portion (992).