The lighthouse on St Sasha was built in 1895, some years after the island's residents moved away and shortly before its final resident moved in

Today, the lighthouse on the island's west coast is, like most in the modern day, automated. The era of the hermit lighthouse keeper is long gone, with the majority switching to unmanned gas systems in the second half of the twentieth century

A handful of lighthouses were converted earlier - experimentally - to see what might work in the future as the industry moved towards automation

Only one - this one - was converted out of necessity