Abstract: A door security arrangement with the frame member which is mountable in a wall alongside the opening edge of a door and has an elongate member slideably mounted therein, the member being substantially the same length of the door edge and being movable from a retracted position in which it lies within the frame member and permits the door to swing past it to an extended position in which it lies alongside and substantially against the inner face of the door and the arrangement including releasable means, located within the frame member which hold the elongate member in its retracted and extended positions and are operable by the normal door locking mechanism.