Abstract: A fixing device, such as an anchor or cavity wall tie, employs a deformable (radially expandible) sleeve element (6) to lock an end of a rod (1) in a bore (12) of a wall or like structure (11). Radial expansion may be achieved by axially compressing the sleeve element between a stop member (2) and an internally threaded member 9 arranged on a threaded portion (5) of the rod (1). The sleeve includes a rib (10), projecting from its radially outermost circumferential surface, which provides an interference fit for the sleeve in the bore prior to axial compression and thus substantially prevents rotation of the sleeve during compression.