Abstract: A composite structural panel is provided. The panel comprises a frame having a longitudinal frame axis; a plurality of beam elements mounted in the frame, each of the beam elements has a respective longitudinal beam axis generally parallel to the frame axis; a reinforcing fibre wrapping that extends around each of the beam elements, the wrapping has a fibre direction running generally obliquely to the beam axis; a plurality of wire strands that extend about the wrapping, the wire strands run generally parallel to the beam axis and the frame axis; an outer layer of reinforcing fibre mat that surround the frame, the wrapped beams and the wire strands, the mat has a majority of its fibres running generally parallel to the frame axis; and, a solidified epoxy resin that extends throughout and encasing the beam elements, beam wrapping, wire strands, outer layer and frame.