Just to update - this back problem is still niggling. Frustrated with progress with physio, I went to see an Osteo and he thought it was muscular (the Physio suspects it's a disc problem). The remedial therapy they suggest conflict against one another therefore I really want an MRI scan to understand what the issue is so I'm going back to my GP to talk through and request a referral to a consultant. I'm in Bupa so this wouldn't be a drain on the NHS. I don't mind about the medical records issue if there is no disclosure required or it's something a future employer (note not the CAA) could not find during their own medical checks (ie if there doc could check my medical records). Any further advice appreciated.