I had one of those Rickman Enfields back in the late '70s. It was a really great bike, except for the transmission, which was really clunky and slow to shift. I'd been spoiled by the Commando gearbox by then, and the Enfield was so much worse by comparison. Still, it had good power, handled superbly, and had great brakes (all for the time, of course!).
Ken