A delivery device for delivery of a medicament to a user, comprising: a tubular reservoir for containing the medicament; a body sized and shaped to receive at least a part of the reservoir; a spray nozzle arranged on one of the body and the reservoir, the nozzle providing a path for the medicament to be expelled from the reservoir; a pusher defining a longitudinal axis and being actuatable for causing the medicament to be expelled from the reservoir through the nozzle, and dose control means for ensuring that the medicament is delivered by the device, the dose control means comprising a track (35, 35') defined on the body and a track follower defined on the pusher, wherein the track follower is defined on a resilient arm (28, 28') of the pusher, the track follower further comprising a peg (52, 52') defined on the resilient resilient arm (28, 28') of said pusher, the track (35, 35') further comprising an interlock defining an interlock surface, the interlock releasably receiving and retaining the track follower when the pusher is in the rest position, the pusher being retained in the rest position until a user applies the actuating force to the pusher thereby causing the track follower to engage the interlock surface, the interlock surface impeding movement of the track follower and maintaining the pusher in the rest position until the actuating force meets or exceeds a predetermined value, thereafter the resilient arm (28, 28') of the pusher being deflected in a direction transverse to the longitudinal axis of the pusher and the track follower overcoming the interlock surface and the track follower being movable along the track (35, 35'), the pusher being movable by a user from the rest position to the activated position to cause the medicament to be expelled from the reservoir through the nozzle, whereby the pusher comprises a thumb pad connected to a rear end thereof and wherein the resilient arm (28, 28') is extending from the thumb pad and is movable from a rest position to a fully activated position relative to the body in response to an actuating force; and wherein the body comprises at least one pair of rails (31, 32, 33, 34) comprising first and second rails extending between a front part of the body and a rear part of the body, the first and second rails defining at least one longitudinal space, the resilient arm (28, 28') of the pusher being received is said at least one longitudinal space. a tubular reservoir for containing the medicament; a body sized and shaped to receive at least a part of the reservoir; a spray nozzle arranged on one of the body and the reservoir, the nozzle providing a path for the medicament to be expelled from the reservoir; a pusher defining a longitudinal axis and being actuatable for causing the medicament to be expelled from the reservoir through the nozzle, and dose control means for ensuring that the medicament is delivered by the device, the dose control means comprising a track (35, 35') defined on the body and a track follower defined on the pusher, wherein the track follower is defined on a resilient arm (28, 28') of the pusher, the track follower further comprising a peg (52, 52') defined on the resilient resilient arm (28, 28') of said pusher, the track (35, 35') further comprising an interlock defining an interlock surface, the interlock releasably receiving and retaining the track follower when the pusher is in the rest position, the pusher being retained in the rest position until a user applies the actuating force to the pusher thereby causing the track follower to engage the interlock surface, the interlock surface impeding movement of the track follower and maintaining the pusher in the rest position until the actuating force meets or exceeds a predetermined value, thereafter the resilient arm (28, 28') of the pusher being deflected in a direction transverse to the longitudinal axis of the pusher and the track follower overcoming the interlock surface and the track follower being movable along the track (35, 35'), the pusher being movable by a user from the rest position to the activated position to cause the medicament to be expelled from the reservoir through the nozzle, whereby the pusher comprises a thumb pad connected to a rear end thereof and wherein the resilient arm (28, 28') is extending from the thumb pad and is movable from a rest position to a fully activated position relative to the body in response to an actuating force; and