That site is probably the one just north of Hampton Loade station on the S.V.R. It's run by the Unicorn Inn 01746 861515 will get you details.
This link is to Google maps.:-
https://maps.google.co.uk/?ll=52.476...21136&t=h&z=16 Hampton Loade Station at the bottom of the screen.
Regards, 62440.