I only know about Peggy's love life because she felt it was important to tell me (and several hundred other strangers) about it.
But more importantly, is there also a KGB file on MacColl? As I recall, there were files on such folks as the Rosenbergs and Mr Hiss,and Gus Hall, too. So perhaps they did have a very nice folder on EMacC. It would be interesting to compare the MI5 file and the KGB file. Or maybe it would just be boring. I don't know.