A signal station was established on the cliffs before 1820 and the facilities were shared by Trinity House and Her Majesty's Coastguard. The Northern Lighthouse Board recommended the building of a lighthouse at St Abb's Head after the sinking of the "Martello" on Carr Rock in 1857. The lighthouse was designed and built by the brothers David Stevenson and Thomas Stevenson and assisted navigation before and after sight of the Bell Rock and Isle of May lights disappeared from view. The light began service on 24 February 1862 and initially used oil to generate its light, it was converted to incandescent power in 1906 and to electricity in 1966 and finally automated in 1993. Before automation the lighthouse was staffed by three full-time keepers whose duties included keeping detailed weather records.