When last on the market French Drove signal box sold for an astounding £300,000 but it does come with a large area of former railway land. It is barely visible in this view taken from the former level crossing with the scene being completely open when I last visited over forty years ago, see....
https://www.ontheupfast.com/p/21936chg/30046908481/french-drove-signal-box-gn-great! Behind the box, partially occupying former railway land where the up loop and mainline once ran is the Rosebay naturist campsite. I suspect that the rampant tree growth comes in handy with them!