A dispenser for dispensing foamed liquid hand soap comprising: a positive displacement rotary vane mixing pump having: a rotor chamber-forming member having an interior chamber defined by interior chamber walls (30, 31, 32), and a rotor journalled for rotation about a rotor axis inside the interior chamber; the rotor having a plurality of vanes extending outwardly radially relative the rotor axis for engagement with the chamber walls (30,31,32); the vanes extending from the rotor circumferentially spaced from each other about the rotor axis; a plurality of vane chambers, each vane chamber formed between two respective adjacent vanes and the chamber walls (30,31,32); wherein, in each rotation of the rotor about the rotor axis in the interior chamber, each pair of adjacent vanes passes through a suction sector of the interior chamber and a discharge sector of the interior chamber and wherein in movement of each two adjacent vanes through the suction sector the respective vane chamber increases in volume, and in movement of each two adjacent vanes through the discharge sector the respective vane chamber decreases in volume; an air inlet into the suction sector of the interior chamber, a fluid inlet into the interior chamber upstream of the discharge sector, an outlet from the discharge sector of the interior chamber, a reservoir for a fluid capable of foaming in communication with the fluid inlet of the mixing pump, the fluid comprising liquid hand soap, the outlet in communication with a discharge opening, a foam generator between the outlet of the interior chamber and the discharge outlet which on air and the fluid passing through the foam generator produces foam. a positive displacement rotary vane mixing pump having: a rotor chamber-forming member having an interior chamber defined by interior chamber walls (30, 31, 32), and a rotor journalled for rotation about a rotor axis inside the interior chamber; the rotor having a plurality of vanes extending outwardly radially relative the rotor axis for engagement with the chamber walls (30,31,32); the vanes extending from the rotor circumferentially spaced from each other about the rotor axis; a plurality of vane chambers, each vane chamber formed between two respective adjacent vanes and the chamber walls (30,31,32); wherein, in each rotation of the rotor about the rotor axis in the interior chamber, each pair of adjacent vanes passes through a suction sector of the interior chamber and a discharge sector of the interior chamber and wherein in movement of each two adjacent vanes through the suction sector the respective vane chamber increases in volume, and in movement of each two adjacent vanes through the discharge sector the respective vane chamber decreases in volume; an air inlet into the suction sector of the interior chamber, a fluid inlet into the interior chamber upstream of the discharge sector, an outlet from the discharge sector of the interior chamber, a reservoir for a fluid capable of foaming in communication with the fluid inlet of the mixing pump, the fluid comprising liquid hand soap, the outlet in communication with a discharge opening, a foam generator between the outlet of the interior chamber and the discharge outlet which on air and the fluid passing through the foam generator produces foam. a rotor chamber-forming member having an interior chamber defined by interior chamber walls (30, 31, 32), and a rotor journalled for rotation about a rotor axis inside the interior chamber; the rotor having a plurality of vanes extending outwardly radially relative the rotor axis for engagement with the chamber walls (30,31,32); the vanes extending from the rotor circumferentially spaced from each other about the rotor axis; a plurality of vane chambers, each vane chamber formed between two respective adjacent vanes and the chamber walls (30,31,32); wherein, in each rotation of the rotor about the rotor axis in the interior chamber, each pair of adjacent vanes passes through a suction sector of the interior chamber and a discharge sector of the interior chamber and wherein in movement of each two adjacent vanes through the suction sector the respective vane chamber increases in volume, and in movement of each two adjacent vanes through the discharge sector the respective vane chamber decreases in volume; an air inlet into the suction sector of the interior chamber, a fluid inlet into the interior chamber upstream of the discharge sector, an outlet from the discharge sector of the interior chamber, a reservoir for a fluid capable of foaming in communication with the fluid inlet of the mixing pump, the fluid comprising liquid hand soap, the outlet in communication with a discharge opening, a foam generator between the outlet of the interior chamber and the discharge outlet which on air and the fluid passing through the foam generator produces foam.