The present invention relates to sliding supports, and more particularly but not exclusively to sliding supports for use in supporting slidable luggage trays in vehicles. The sliding supports disclosed herein offer less frictional resistance than those of the prior art and are more likely to run smoothly in the environment of a luggage space in a vehicle. The sliding support includes an elongate support element (40) and a block (20) slidably supported on the support element (40). The block (20) has a roller (30) mounted thereon. The roller (30) provides a load bearing contact with the elongate support element (40).