In general design and layout, No Man’s Land Fort is very similar to Horse Sand. The fort has been converted to a luxury home/hospitality centre (I think that’s some kind of fancy name for a hotel) but, as such, has had a very troubled career including a forced closure in 2004 due to Legionella bacteria in the water system and, in 2007, the collapse of the owning company. An episode of the BBC series Dr Who used the fort for location shooting in 1972. The light was originally shown in the conventional way from a lantern on top of the tower attached to the keepers' house.  Later the lantern was removed and the light was replaced by one of the "bulb on a stick" variety, the short mast and light being similar to that on Horse Sand Fort.  However, it appears that even that light was deactivated in 2010.  This photo and the one of Horse Sand Fort was taken on the same day as the photo of the Nab Tower.