James - I lived in Berwick, well Tweedmouth actually, for quite a few years. Don't want to be too specific on dates etc as I am still 'in' trying to help my wife see the follies of the WTS.
It really is a nice part of the world to live. The KH is the Old Manor House of Tweedmouth although I understand it is up for sale as they want to do a 'quick build' up the Cow Road near the Scremerston end. I have very pleasant memories of trips down to Holy Island and Seahouses (great fish & chips). It was always good to visit Eyemouth and St Abbs Head.
Some of the Berwick congregation are still there but getting very old.
George