By Scarlett O’Toole Prince William and Prince Harry couldn’t have looked more different as the brothers stepped out in public following their father’s cancer diagnosis. The Prince of Wales, who is president of the British Academy of Film and Television Arts (BAFTA), attended this year’s BAFTAs without his wife after Princess Kate was forced to withdraw from the glitzy event as she recovers from surgery. William looked downcast as he arrived at the Southbank Centre’s Royal Festival Hall. His appearance comes after the Duke and Duchess of Sussex recently spent time in Canada as part of the Invic…