Britain’s worst rail disaster, in which a troop train crashed, claiming 227 lives. A distracted signalman forgot about a stationary local train that he had shunted on to the opposite running line to let a following express train through, as both adjacent sidings were already occupied. This led to a multiple collision between a troop train and the local train, also involving two coal trains in the sidings and, shortly afterwards, the following express train, which ploughed into the wreckage.