Abstract: A fixing device (1) for attaching an item to a suspended plasterboard wall or ceiling (16). The fixing device includes a plug portion (4) for securing in a hole (14) in the suspended plasterboard wall or ceiling. The plug portion includes an aperture (6) for receiving a fastener that extends and a longitudinal backplate (2). The longitudinal backplate is attached to and projects from diametrically opposite sides of the plug portion and arranged in use to engage with the rear face of the suspended plasterboard wall or ceiling when the plug portion is secured in the hole. The perimeter of the cross section of the plug portion has a minimum bounding circle having a first diameter. The perimeter of the cross section of the fixing device through the plug portion has a minimum bounding circle having a second diameter less than or equal to the first diameter.