Once the pride of Britain's railways, the iconic A4 Class steam engine is now rarely seen. But the locomotive has returned to the tracks and was pictured yesterday trundling along the Yarm Viaduct.

The A4 Sir Nigel Gresley was hauling the Fells man service and arrived at Carlisle having travelled on the Settle to Carlisle line. Keen train spotters were out in force trying to catch a glimpse ...