Princess Juliana (17) took a train. As she sat, perforce upright, upon a brightly varnished but angular third class bench, few would have supposed her the sole heir to the throne.

A train made up exclusively of third class carriages, spotless, as are all Dutch trains, chugged out of the Hague last week brimming with apple-cheeked Girl Guides.

She, who chattered gleefully with the exuberance of 17, waved a dutiful goodbye to stout ladies in waiting, was Girl Guide Juliana Louise Emma…