Royal Navy Type 43 and 44?

I know what the Royal Navy Type 42 and 45 Destroyers look like, but does anyone know about the Type 43 and 44 designs? I think I may have seen a drawing of a 43 which had a 4.5 inch gun, twin Sea Dart launcher and 2×6 round Sea Wolf launchers forward, a flightdeck and hanger in the middle and another twin Sea Dart launcher and 2×6 round Sea Wolf launchers at the back.