Hi Heli-Ice
The flag is that of the City of Durham.....often carried (certainly in the past) by at least one aircraft allocated to Boulmer. 202 Sqn received the Freedom of the City of Durham in (OMG was it 93 or 94).....and somewhere there are pics of a three ship overflying the glorious cathedral to help celebrate too. It should have been a 5 ship -one from each of the Flts (Yes 202 had 5 UK Flts in those days!)...but op committments (and unserviceabilities) played their part in preventing it.
