so extended circuit work was highly unpopular with many rear crew....
It was not popular with co-pilots either, especially yours truly. On the Valiant checklist you were required to jettison the remainder of the underwing tank's fuel at REP 3 (radar entry point, 30,000 ft for your airfield). I used to hoard as much fuel as I could in the bomb bay and transfer tank and at the last moment pump the contents into the port underwing. Whoopee! there would be a massive contrail over the east coast and surprise, surprise, we would be down to 10,000 (minimums) lbs on the approach.
Bugger the Ozone layer.