That's in Lincolnshire rather than Notts, it's not in the best of states now:
RAF Nocton Hall/Nocton Hospital 22/10/06 ARCHIVE - UK Urban Exploration Forums
&
Nocton RAF hospital and Hall - REPORT - 2006 ARCHIVE - UK Urban Exploration Forums

Those pages linked to this very brief history, which at least gives some general dates:


RAF-lincolnshire.info :: Nocton Hall

Hope that helps a little, (and I'm sure we'd like to see your pictures).

Cheers,
Adam.

__________________
"Wars cannot be fought with dream stuff" - Sir Percy Hobart.