Secrets of the Royal Train

S1, E1: It's all aboard for a peek inside a unique ‘palace on wheels', the locomotive used to convey the Royal Family around the British Isles. As you can expect with transport fit for a king, this train is the epitome of luxury and opulence. Insiders reveal its lavish past as the royal ‘express of excess' and the private world behind its veiled carriages is explored.