This is a delightfully photographed depiction of the life of pioneering Simon Cavendish (Andrew Garfield), afflicted with chronically debilitating polio in his late twenties, who spent much of his life striving, with his wife Diana (Claire Foy) to help develop and improve the facilities for the disabled. It was produced by their son Jonathan, so there is a certain - admittedly rose-tinted - authenticity about their…