One wouldn’t want to be on the wrong side of Tamara Rojo. The most fearsome figure on the British dance scene since the authoritarian reign of Ninette ‘Madam’ de Valois, she has capped a brilliant international career as a prima ballerina with a formidable decade as artistic director of English National Ballet (as well as the award of a PhD, the patented invention of an anti-bunion device and the birth of her first child at the age of 46).