The MGWR class E was a small 0-6-0T steam locomotive class designed in 1891 by Martin Atock, the then locomotive superintendent of the Midland Great Western Railway and twelve engines were built.After the grouping of 1925, the Great Southern Railways classified them Class 551 or Class J26, and fitted them with new smokeboxes, safety valves and chimneys. The nameplates, builder’s plates and sandbox numbers were removed at this time and replaced with a numberplate.