Local political figures have suggested that residents cannot undertake work to insulate their listed properties and in particular double glaze them.
Since there are double glazed grade 1 listed buildings in Bath the issue is obviously a little more complex that the political headline.
If you are wishing to undertake this sort of work we would recommend consulting the excellent and authoritative guides published by the Bath Preservation Trust which are available to download below:
http://www.bath-preservation-trust.org.uk/wp-content/uploads/2017/05/Making-changes-for-web.pdf
http://www.bath-preservation-trust.org.uk/wp-content/uploads/2012/08/Warmer-Bath-PDF-June-2011.pdf