On 5 Aug, 11:36, wrote:

I've just discovered a cellar.

One the TV renovation programmes found one once. The explanation
given was that it was common practise to fill redundant cellars with
demolition rubble from the next job (wells and air raid shelters
likewise). Perhaps we should all look for them; not just those with
old houses -- Grime Busters reported on a Council house with a
substantial void underneath, filling with sewage (perhaps a reason for
_not_ looking .

Chris