I am truly sorry and not just a little shocked to read of Mark's death. Very sad indeed. We were on the same Flying Scholarship at Sywell aerodrome, near Northampton, in 1972 and occasionally bumped into one another during our flying careers. His father flew Mosquitos in WW2 and was the last station commander at RAF Pershore, now Throckmorton airfield. My condolences to Mark's family.