A method of manufacturing a structural composites component in a mold comprising first and second mold halves is provided. The method comprises the steps of providing a fiber or fabric preform, providing a resin layer that is separate from the preform, inserting one of the preform or the resin layer into the first mold half of the mold, then separately inserting the other of the preform or the resin layer into the first mold half such that the one of the preform or the resin layer is disposed on top of the other of the preform or the resin layer in the first mold half. The second mold half is then closed over the first mold half and the mold is pressurized in a compression press to cause the resin film to impregnate the preform, the mold being maintained at a constant temperature throughout the method of manufacture.