Abstract: A locking device for a locking a lid to a body of storage box is disclosed. The locking device a key operated turnable portion and arms extending from the arms. Each arm has an end portion that is received in a first recess in the side of the body and a hook portion that is received in a second recess in the front face of the body. When the locking device is in an unlocked position the end portions do not extend into the first recesses and the hook portions are positioned so that they can move in and out of the second recess as the lid is lifted. In the lock position the end portions extend into the first recesses and the hook portion can engage a surface of the recess preventing their removal from the recess.