I find this interesting. So I made a layered map using Powerpoint.
Part of Frant (Parish) is in fact in Kent (see dotted County boundary, below)
& Part (about one half) of Lamberhurst is indeed in Sussex.
You may have known all that Andy. But it also makes me think the incident reporting around Tunbridge Wells was in fact quite accurate.
Hmmmm. makes me wonder about the Defiant site.
Did you locate it yourself?
http://img2.imageshack.us/img2/7008/12oclock.jpg