Abstract: A device (10) for mounting and supporting a load on a seat (12) having a co-operating seat belt, the device (10) comprising a base (14) supported on a seat base; a rear portion (22) for engaging with a seat back; a forward portion (18) for engaging with a seat belt designed as a lap restraint; and means for mounting and retaining a load supported by the base (14), the rear portion (22) having first (20) and second (22) retaining elements, each extending generally at a substantial angle to the base (14) and configured to engage the surfaces of the seat to resist forward movement of the device (10) relative to the seat, irrespective of correct and effective engagement of the seat belt.