The old question… osteopath, chiropractor or physio? Edinburgh has a good choice of professionals you could consult for lower back pain or sciatica. I reviewed the osteopaths I recommend in the article Who is the best osteopath in Edinburgh? As indicated in that review, it depends what you’re looking for. If you’d like a better understanding of how the professions compare, check out the article Chiropractor, osteopath or physiotherapist?
I know this is a brief article, but I think all the content you need is linked to!