Depends what you are trying to do. If you are wanting to sue the MoD, I doubt if the RBL will want to get involved. If however, you are wanting to claim a War Pension (sometimes you get offered a lump sum depending on the degree of any disablement) then the RBL will get you the necessary forms and help you fill them in. Suggest you get in touch with the "Royal British Legion County Field Officer" for you area and he will send a volunteer welfare worker to see you. If you have any trouble finding the number/address of your County Field Officer let me know and I will get it for you. By the way you don't have to have been injured in action. If you have any disablement/injury that can be attributed to service then you may qualify for a War Pension.
But it isn't a gaurantee that you will pass basic training, you go in on your own accord, unfortunately.
If you got discharged medically and you disagree with this, then get a 2nd or 3rd opinion but if you were discharged for fitness or failing to fit their prospects and such, unfortunately you can not claim anything.
You have not served tbh and you will not be entitled to anything.
Could I ask why you were discharged? Can you not rejoin eventually? You can not claim any money because you are skint and don't have a job. It's either find a job or go sign on for that lovely free dosh they seem to give out!
This could be the same person under a different name who was complaining that they'd been discharged from Raleigh due to a medical condition that he had apparently declared during the process of joining the RN (and at that time got the greee light.) Could be wrong though?