Yeah, it's a database full of "listed" buildings that are currently uninhabited or deteriorating. A listed building in the UK is a building or other structure officially designated as being of special architectural, historical or cultural significance. It is a widely used status, applied to around half a million buildings.

http://www.buildingsatrisk.org.uk/BAR
You can search it here. There's only small photos of places though, and no interior shots.