Actually I think you'll find it's
Iain Gillespie
It was 18hrs 50 and I can confirm sadly there was no DCS, although the commissary appeared to have an endless supply of steak which sustained the crew through that epic trip.
I believe that oil capacity was the limiting factor, can't remember the actual figures, but don't recall any particular dramas with the Speys running sweet for almost 19hrs. However, I do remember the first AAR bracket made the heart beat a bit faster due to a wee RV faff. BZ to the tanker boys though, they done real good throughout the war and their contribution was much under-rated.
Concur that Dave Emmerson was a top boss, with Dave Ford a superb AEO skipper. Pretty sure the CO did some nav work during the trip, but can't remember if it was left or right hand seat.
It was all a long time ago.