Behind the scenes at York Theatre Royal panto
People fly in from Sydney to see the panto at York Theatre Royal. What's its secret (aside from Britain's longest-serving dame, Wagon Wheels and 86 costumes)?Berwick Kaler is lying flat on his stomach in a multi-storey car park in York, dressed as a Valkyrie " breastplate, horned helmet and all. Local BBC newsreader Harry Gration stands astride him, jiggling his hips and pretending to ride a horse. A naggin…