A container-mounted beverage dispensing device, comprising: a base including a clamp arranged to engage with a neck of a beverage container to secure the base to the container neck, the clamp including at least one clamp arm that defines a receiving space for the container neck, the at least one arm being spring biased to move relative to the base to exert an engagement force on the container neck when fully received in the receiving space, the at least one clamp arm defining an entry opening to the receiving space at a bottom of the clamp, the clamp being arranged to fully receive the container neck into the receiving space by inserting the container neck into the entry opening and moving the clamp downwardly relative to the container neck so as to move the at least one clamp arm against the spring bias; and a body mounted to the base and having a needle attached to and extending from the body, the needle being arranged to be inserted through a closure of a beverage container to introduce pressurized gas into the beverage container and extract beverage from the container, characterised in that the body is arranged for movement relative to the base between an upper position and a lower position, the device further including a latch that releasably locks the body in the upper position until a container neck is fully received in the receiving space, and in that the latch is configured to release the body to move to the lower position with a container neck fully received in the receiving space, and the body and needle are configured to be movable downward relative to the base to the lower position to insert the needle through a closure at the opening of the container. a base including a clamp arranged to engage with a neck of a beverage container to secure the base to the container neck, the clamp including at least one clamp arm that defines a receiving space for the container neck, the at least one arm being spring biased to move relative to the base to exert an engagement force on the container neck when fully received in the receiving space, the at least one clamp arm defining an entry opening to the receiving space at a bottom of the clamp, the clamp being arranged to fully receive the container neck into the receiving space by inserting the container neck into the entry opening and moving the clamp downwardly relative to the container neck so as to move the at least one clamp arm against the spring bias; and a body mounted to the base and having a needle attached to and extending from the body, the needle being arranged to be inserted through a closure of a beverage container to introduce pressurized gas into the beverage container and extract beverage from the container, characterised in that the body is arranged for movement relative to the base between an upper position and a lower position, the device further including a latch that releasably locks the body in the upper position until a container neck is fully received in the receiving space, and in that the latch is configured to release the body to move to the lower position with a container neck fully received in the receiving space, and the body and needle are configured to be movable downward relative to the base to the lower position to insert the needle through a closure at the opening of the container.