HI there
Alexander Technique is something that can really help postural awareness and more efficient use of "what you have" in body structure. There are also many physios who, after finding out that even "physio" doesn't work for everybody convert to Alexander. I have a contact in the Sheffield area who did that. If you need info about who to go to send me some details by PM and I'll see what I can do for contacts. Having expierienced myself what Alexander can bring I'm sure it's a valid option or addition to your back problem.