Cheers all for the helpful suggestions; some I can easily find, for
others I think I may have to make a trip to St. Pancras...

Having looked at some of the suggestions, I'm still searching for a
diagram/description of the information flow in the defences.

E.g. Battle of Britain

Chain Home station - filter room - group control room - sector
airfield - friendlies vectored onto enemy a/c

(This is probably wrong, but the principle remains)

I know that originally Luftwaffe night fighters were tied to one
particular radar station: what, for instance was the chain of
information and command from the radar to the plane?

Thanks again,

Jakob