hi.
in response to valda's and forester's question's, sutton lane is the road that leads up to the main gates of the hospital, which now marks the primeter of "crown property" (highdown and downview prison's) and is know known as both sutton lane and highdown lane. the farm is no longer part of crown property (and is known as Fairlawn farm) and now has its own entrance gate, the cemetary is a part of the farm (infact its a horse paddock), and so i would assume the address was that of the farm. which also brings me to to my second point which is in response to forester's question, the cemetary (now the paddock) unfortunatly only has a hand full of head-stones left, and i've not been in the paddock to take a look at them.
dirctions
to reach the cemetary you need to go to the corner of fairlawn road and sunnymede avenue, and at the very corner where these roads meet there is a track which runs between the old hospital walls (on your right) and a golf course(on your left), go down the track ( about 20- 30 meters, maybe a little more) poke your head over the wall and you'll see the remaining headstones.