Not sure how things are handled in the UK, however, your 3 specialists should have been brought in by your primary, and you should have had whatever workups while in hospital that last time, with thorough reinvestigation of your problems. Its hard enough to get people to listen to our problems, demand care.

Everyone has a cellphone these days - take a pic of anyone's license and insurance card when involved in even the smallest "shunt" on the roadway - you never know what may evolve from your past history, especially as recent as yours was.

Leave reminders in your wallet with your license to get the other driver's info; on your visor , somewhere highly visible - protect yourself when you are not responsible - remember all those shakeups are TRAUMA to your neck and head.