Every time I walk along the riverbank at Sutton Bridge, I’m always fascinated by the Sir Peter Scott Lighthouse. Rising majestically above the fenland landscape, the building is steeped in history and never fails to demand my attention. It’s named after conservationist and artist Sir Peter Scott, son of legendary explorer Scott of the Antarctic, who made it his home between 1933 and 1939. The lighthouse – and its twin on the opposite bank – was built in 1830 to celebrate the final stages in the drainage of the fens and is now listed Grade II*, which I understand rather impressively almost puts…