March depots Class 31 5661 (31234) sits alongside the 'day' shed at Stratford, the loco was one of 15 (5655 - 5670) supplied new to March shed fitted with a 1600HP Mirrlees engine, all 15 locos were later re-engined with the EE 1470HP 12 SVT engine, 24/2/73. ©Norman Preedy/Rail Photoprints