The present lighthouse was constructed over several years up to 1915 and was officially opened in 1916. Forming a triangle of lights with South Bishop and the Smalls to protect shipping moving into and out of Milford Haven and the Bristol Channel, the lighthouse shines 20 miles (32 km).
Construction of the present lighthouse was only enabled after the construction of a new jetty. This enabled building materials to be landed, which were then moved to the site using a narrow gauge railway, initially powered by a donkey, then a pony, and finally a tractor. Once in operation, relief was provided by boat from Holyhead. Automated in 1983, it is now monitored and controlled from the Trinity House Operations Control Centre at Harwich in Essex.[3]