No win no fee are useless for the most part and be very careful on court fees if it goes that far, I'd first check if you can get legal aid for court fees, even if you can't get legal aid for solicitors fees, you might still get court fees paid, you can check on line, at help with court fees .gov.
After that I would pay for one hours consultation with a legal firm that works that area of law, if they can tell you the relevant laws which you need to use and if it is easy to make the claim yourself, might need another hours fee to draw up paperwork which would be called a letter of claim explaining why you think they are at fault and the laws they are in breach of, and a rough financial amount at the upper end of what is acceptable for the injury.
If they ignore that you would need to go to the money claims online, which is a country court and start you case for a CCJ on the laws you claim the defendant breached in error.
That costs about 500 for a small claims court.