English Heritage and the National Trust claim losing the case could undermine the protection of other important historical sites.

BBC: Lyveden New Bield

The council, English Heritage, the National Trust and residents took the case to the High Court, believing that if the developers built the wind farm it could have had implications for other national heritage sites.

BBC: Barnwell Manor wind farm: Conservationists win legal bid

East Northamptonshire Council, National Trust and English Heritage said an inspector's approval of the project at Barnwell Manor was legally flawed.

BBC: Lyveden New Bield