Thank you, all, for your support.
I live in rural Wales so no choice plus the towns (if you're able to travel) won't take you on if you're already registered.
I did complain about the treatment my mother was having with a long illness. It was rare so she was trotted out in lecture rooms for new students. My mum didn't mind allowing students to learn about her condition but when I realised that her consultant wasn't treating her very well despite profiting and earning a name for himself over her case I went a bit mad.
Bottom line, though, try complaining about healthcare professionals. You get nowhere as ranks close. On top of that I noticed that as a family we started having problems with many others. Sometimes it's better to put up and shut up. If I had the money I would go private. At least when you pay you get eye contact and spoken to like an adult.