Princess Coronation Class 8P 4-6-2 46233 DUCHESS OF SUTHERLAND approaches Botany Bay level crossing at little more than walking pace due to a temporary speed restriction applicable only to steam at the A638 overbridge ahead. "The White Rose" excursion from Cambridge to York on Thursday 17th December 2015 was running over two hours late due to a series of delays that were not caused by steam traction.