Damian Lewis has been photographed returning to work just months after the tragic death of his wife Helen McCory.The 50 year old actor put on a brave face as he arrived on the set of the hit Sky TV show Billions in London, in which he plays hedge fund magnate Bobby Axelrod.The star dressed casually for the day of filming as he donned a blue jumper with a matching navy padded jacket alongside a pair of dark trousers.