When my back was really awful, I saw a private physio while waiting for the NHS one. It helped enormously, massage, exercises, scan treatment etc. - but expensive.
I can't even begin to describe my extreme disappointment with the NHS physio, different as chalk and cheese. They shouted instructions (like I was thick as a plank and deaf) poked at my spine - then gave me printed exercises. I didn't bother going back.
Eventually, in extreme pain, I saw a locum doctor - with a superiority complex, who said I just needed paracetamol and ibuprofen (they don't prescribe them now, so you buy your own). I marched/limped out, saying I wouldn't even bother them if that was the case. Luckily, I still had plenty of Codeine and Tramadol.
That was about five years ago - and I just won't see a doctor unless it's vital now.