PEN15 is owned by Steve Parrish the former MotoGP rider & friend of Barry Sheene.....he also owns 60CK When interviewed a while back he explained : What is the story behind the registration number on your car? I’ve got two registration plates, PEN15 and 60CK. For dirty minded people, these appear to say something… They were originally purchased when I was married to stop my wife driving my cars. When I met him last year PEN15 was on his Range Rover