A kit of parts for securing a plurality of fixtures to an elongate support member is described. The kit of parts comprises a plurality of attachment members. Each attachment member comprises an aperture for receiving the elongate support member and a fixing detail adapted to attach a fixture to the attachment member. The aperture is larger than a lateral dimension of the elongate support member to provide a gap between the attachment member and elongate support member when received in the aperture. The kit of parts also comprises a plurality of locking elements. Each locking element is adapted to be received in the aperture in the gap between the attachment member and the elongate support member to secure the attachment member to the elongate support member by friction. Further, each attachment member is adapted to engage an adjacent attachment member when secured to the elongate support member by at least one said locking element to form a hollow column secured around the elongate support member for supporting a plurality of fixtures.