http://www.leighday.co.uk/Illness-an...-injury-claims
These guys dealt with mine, and are British Cyclings "tame" lawyers. If you are a member you get free legal cover. If not, i *think* they do a no win no fee deal. Not 100% sure as i've not had to use them as a non-member.
http://www.ctc.org.uk/member-benefits/ctc-incident-line
These are the "other" side, the cyclists touring club. Not sure what the deal is with them, but, as with Leigh Day, they specialise in cycling accidents.
It may be worth ringing both CTC and BC, as i've heard rumour that if you join after the accident, you can still get the free cover. But that info is a few years out of date, so not sure what the current state of play is.
BTW, make sure you've reported it to plod, and got all the important bits of paper, statement, incident number etc.
Also, write down (now) exactly what happened, in detail, get some sketches (or pictures) of the junction too. Pictures of the injuries too, copy of the A&E report as well.
If it goes to court (mine did) it might take a year or more, and having it all written down will pay dividends. And having copies of other peoples reports too.
(The guy who ran me off the road (deliberately), crapped himself when he realised the two guys he'd tried to maim were professionals in their late 20s. Rather than scrotes on MTBs. Pity he realised once he'd got to court with a not guilty plea......... they put him through the wringer)