Forum Rider Down and/or notification of minor incidents

1) report the driver who tried to force you off the road. Make sure an official report is made. There will be a witness, somewhere.
2) contact a solicitor and get advice. There's a solicitors we like thread here, and the CTC recommend some people IIRC
3) try not to worry too much, and focus on healing up

This. Completely missed the 'force you off the road' thing, was assuming just a bad overtake.