Far as one can remember there are no jet fuel tanks near any hangars at EGSH. All the fuel is kept down at the depot on the little perimeter road and then tankered in through the main perimeter security gate to the aircraft.
However those with long memories will recall that during the cold war, Vulcan bombers used to sit at Norwich airport, 24/7, engines fired up waiting to go and bomb the Russians. These aircraft used to be fully armed with nuclear devices and would stand, loaded and locked, on the hard opposite what today is the new and improved hangar like terminal building, for use of which an extra tax, over and above that levied by the government's green political usury, is charged.
It was always rumoured that one or more nuclear device, disarmed of course, had been left at Norwich and indeed apparently one of these was almost fitted to the Vulcan which is now in the Norwich Aviation Museum at the upwindish end of Rwy 27 and which did indeed fly down towards the Malvinas during the British armed aggression there. It had to turn back when it arrived at Ascension Island, suffering from structural failure. Large chunks of its heat resistant tiles had started to fall of. After a long and exhaustive enquiry by the RAF adjudicatory panel into: Accidents that might have been, Vulcan, one of; it was determined that this was not due to Argentine sabotage but rather attributable to the quality of British workmanship and engineering locally at Felthorpe.
Anyway, the end result of all this is that if the very strong and substantiated rumours are correct, then what the BBC or other journalists saw and mistook for fuel tanks were in fact the underwing pods for the nuclear devices Devices which, furthermore, have apparently never been removed from their camouflaged casings, although they have apparently been rendered sufficiently safe as to satisfy Norwich City Council health and safety regulations which, as all who dwell in her know, are among the toughest in the country.
