Hi all,
Thanks everyone for the replies, lots of brilliant advice. I'm off work today as the hospital was right, it does hurt even more 48 hours later! I wasn't a member of CTC so I've given Bikeline a call, very friendly, details taken and they're going to call me back later today.
In terms of witnesses and so on I overheard bystanders telling the driver "no mate I saw you hit him", but i was just concentrating on lying still and so looking up at the sky on my back, so don't know who they are, and I could barely mumble anyway. I'm hoping the 4 Police officers who turned up will have their details. I checked his reg against that insurance database and it comes up as not covered.
I just really want him to face some kind of justice, he was just such an idiot, denying he hit me (my back wheel clearly disproves this), and at first telling people not to call the Police.
I know in the scheme of things this may be treated as a minor collission - while I still have major road rash, bruised and bloodied chest, elbows, forearms and kneecaps (having to walk round with straight legs as too painful to bend them!), and a killer headache still almost 48 hours later - I could easily be one of those fatal collsion info request signs and I'm not.
But I just don't see how he could have done what he did - he just drove straight into the back of me as I was moving along at 15mph on a near empty road in perfect conditions - unless it was deliberate, or he totally didn't see me as he was distracted by a mobile or sat nav, etc (texting was my immediate thought but I obviously didn't see him coming at all (he would have been directly behind me) so I have no evidence, maybe an eyewitness will have seen). Even if he had seen me and attempted to pass, misjudged it and clipped me on the side I could get my head around it and accept it more, but he just smashed squarely into the back of me at high speed as I was moving along.
As I say first time I've ever had an accident - despite cycling 8 miles into central london most days for the last few years - I naively assumed that if i had an accident it would be being clipped from the side, or a car pulling out on me and going over the bonnet, so I might be able to see it coming and prepare and control or mitigate the fall in some way. This was just scary as I had no warning or control whatsoever, it was just bang, I've been hit at considerable speed from behind as I cycle along, I'm catapulted forwards, then I'm lying on the road, can't remember the impact at all. All my injuries suggest I landed on my front, but I came around on my back.
But again, a big thank you to everyone for taking the time to reply.
Rob