Sarah, These new posts prompted me to try and pin down precisely where 604 went in. By a stroke of luck I found the farmer of the next fields. Very helpful, he remembers it vividly and walked me through Goggle Earth to 52°41'36.70"N 0°40'5.34"W
In fact, the field still shows evidence.
Now all you, and sarag need is a 4 ship flight of IX Squadron Tornados, fingers four low level at 12.30 on the 30th January.
IX Squadron. Anyone there?