I was tracking down an id number for a site I'd put on the Northumberland SMR years ago and noticed that English Heritage had listed wall and walls at half a dozen locations in the parish. And one sheepfold. I've copied down their map references and will check them off on the map sometime. Unusual. None of it'll be mine, or I'd have heard. Probably the late Ted Ridley's and perhaps grant-aided by EH. (His wall was 'ok').