Fencing (1) comprising a plurality of horizontal wires (4), a plurality of vertical pickets (3) and a plurality of posts (2). A plurality of insulators (5) are located at the junctions of the horizontal wires (4) and vertical pickets (3) and act to clamp the horizontal wires (4) and pickets (3) into position thereby providing insulation therebetween. The fencing (1) is pre-fabricated and is erected on site by securing the horizontal wires (4) to the posts (2). Some or all of the horizontal wires (4) and pickets (3 ) are able to be electrified to meet control requirements.
