That's pretty much how I remember it. Yes, Sydney Carter. Yes, Nadia Cattouse, who I believe was the wife of a West Indies (Jamaica?) ambassador. Martin accompanied her as a rule. She was a regular on a news roundup TV show (In Town Tonight? - the aging memory falters) as were Robin Hall & Jimmie MacGregor and a few others. Count me in as another who remembers it, though I haven't sung it in a while.