SR 4 COR No 3144 on the ex-LBSCR line between Leatherhead and Dorking. A southbound Victoria – Portsmouth Harbour/Bognor Regis train at Mickleham Crossing having just exited Mickleham Tunnel. The official opening of the newly electrified Mid-Sussex line took effect as from the 2nd July 1938. This new 4-COR unit 3144 is leading a 4-BUF set.

Photo: O.J. Morris / Rail Archive Stephenson