hi there, sorry to hear about what happened.
i just wanted to let you know you should check out your dads and your own
home insurance as often you will have legal cover on them which will cover you. they will instruct lawyers who specialise in medical negligence who will then look at the medical records to see if you have a case and it wont have cost you a penny.
it is good practice to write a written complaint to the trust first and receive a response but you can instruct a solicitor through your
home insurance while awaiting a reply.
hope this helps. x