Bob Pettifer had told me the news about your father. I was very saddened. My sincere condolences.
I met your father through gliding in the early 80s so we knew each other well because of that.
Although we both worked at Warton, our respective tasks didn’t bring us into direct professional contact very often. Up till fairly recently we did, however, communicate on various extra-mural aeronautical technicalities now and then.