Compton DVOR navigation beacon
This mystery object is the Compton DVOR navigation beacon.
A what? Find out here.
There are more beacon photos here.
"Compton DVOR aircraft navigation beacon, Haws Farm Hampstead Norreys (Hampstead Norris). This is the site of a old RAF WW2 airfield. Now mainly returned to arable farmland it still has one grass runway which is used by a couple of aircraft through out the day."