This is the Association of Occupational and Environmental Clinics. Their web site contains a list with many more details about these individual clinics. I have only reproduced the basic contact information here, and only for those clinics that list expertise in musculoskeletal problems. I cannot claim that all such clinics are competent and effective in treating RSI, but they are, at least, more likely to be aware of RSIs and experienced in addressing them, than the "average" general practitioner.