i want andy to continue this thread until it's conclusion, either the tanks are there or they're not and tanks are fairly substantial lumps so should be easy to verify. let's see what comes of it.
as an aside i was talking to another forum member about this thread and we got onto the subject of buried tanks and have resurrected an old rumour of a cromwell buried nose first in an old clay pit in rickmansworth. so it looks like andy has helped find 1 tank, 325 to go