Here's a couple more KW publications that don't seem to have been covered. I'm not lucky enough to own them, but these are advertisements are from Modern Motor, and I assume they reflect the actual covers.
Nice Jennison!
Nice to see the car and van have matching colours.
And this one I do own, being the only KW publication I've run across at what I considered the 'right price', considerably more that it's original 5/6, but still reasonable.
And finally, an advertisement from Modern Motor, July 1956, featuring the promo photo shown earlier. He was certainly a prolific publisher.
George