I saw this on the BBC – Holiday let plan for windowless WW2 bunker in Ringstead: https://www.bbc.com/news/uk-england-dorset-57929653. Longer article.
An “oppressive, windowless” World War Two bunker is to be brought back into use as a holiday let with sea views.
The Grade II listed bunker at Ringstead, Dorset, was once part of the RAF Ringstead radar station.
The concrete structure, which is almost invisible from the outside, will be turned into two-bedroom accommodation.