If you have been given it then that should tell you something. But the good news is that you are probably able to sell parts for folding money. If this car was rough but had it's roof it would be worth something and i doubt whether you would have been given it. IMO don't spent time or money on it. I'm in the Midlands too and may be able to assess and guide you further but I am never going to advise you to carry on with it.