Hi Rich,
No progress from me unfortunately, still not running 
Going for some more cortisone tomorrow, this time under GA and x-ray and deeper into the joint. We will see!
I have read that bursitis very rarely occurs in isolation, it is almost always triggered by some other tissue damage but these consultants like to treat the symptoms and are not always great at finiding the cause! A good friend of mine has been out of action with hip bursitis for months and through a 2nd opinion found out that she actually has a labral tear 
Carry on taking it a bit easier Rich and best of luck to you and everyone else.