I remember that, mainly because it was mentioned on a documentary a few days ago. They both danced in Canada and Margaret became patron and certainly danced at CSH on several occasions. I don't know if Elizabeth ever went to the House when she was still HRH, I am sure she never did as HM.

I remember being told that there was a bomb scare before one of Margaret's visits after an EFDSS member had decided to use the House for free parking on a day trip to central London.