Abstract: A door latching system according to the invention is substantially conventional save in having a circular face plate (and corresponding striker plate) rather than the conventional rectangular form. A counterbore 34 of diameter D2 and depth T is drilled in the stile 10 of the door to receive the (circular) face plate. A bore 32 of diameter D1 and length L is drilled in the stile 10, concentric with the counterbore 34, to accommodate the body of the latch. Thus the latch is fitted with little or no chisel work.