Satnav to Postcode TN32 5HU. This will actually take you to a spot about a mile away. From here, take the road signposted MOUNTFIELD for just under a mile, then see the sign for Hunters Farm on your left.
Using Google Maps, search for the Google Plus code, which is XC8G+C3 Robertsbridge NB if you are less than 30 miles away, just search for XC8G+C3