Just found a new (and very good !) aerial shot of the airfield ... possibly taken in 2012 ?
The new embankment curving around the extremely pondy SE corner of the airfield is conspicuous (and land beyond that is to be sacrificed to the estuary as the waters rise...
The photo (by Stephen Blee) can be found at
Photos: - Aircraft Pictures | Airliners.net
OAP John