I had this problem a couple of years ago and the doctor gave me pain killers and anti-inflamatory pills. The problem persisted and people told me that it would probably take a year or two to go away. Someone then recommended a guy in Peterborough, where I live, who is an orthopaedic massage therapist. After just two treatments, using massage and ultrasound, the pain had gone. He also gave me some exercises to mobilise the joint, which I still do from time to time if I think my shoulder is getting stiff. Just looking at his leaflet I see he is registered with the LCSP and their website www.lcsp.uk.com has a list of members, so you can find someone in your area. Good luck!