Abstract: A security post to be located within an entry to control vehicular access and comprising a tubular member (10) installed below ground with its upper end generally level with the surface, and having a hinged lid (14). A post (17) is slidable vertically within the tubular member (10) and is lockable by means of a key operated lockable handle (18, 19) which rotates to locate a locking bar in one of two vertically spaced slots (15, 16) to lock the post in a lowered or raised position whereby the post may be stowed away below ground when not required.