It looks very like someone who's pretending to be the NHS: wrong colour of chequers, NHS logo is some kind of random sticker stuck on the screen to be seen in the mirrors, the multiple lights to appear more important, what looks like an additional loud horn as well. I'd expect the rider was the one wandering around in a 'Polite' marked gear to go with it. The Maverick style helmet dents the image a bit, but does point to someone with identity issues.