(Arthur Bryant on ageing) On his way out, he stopped by the concession stand. 'Can I take one of these?' he asked, indicating the programmes. 'I'm a pensioner.' 'I'm afraid senior citizens have to pay just like everybody else,' said the old lady behind the counter. 'Well I'm also a police officer, so I'm taking one of those as evidence. Chuck it over, Gran.' 'Charming.' She reluctantly withdrew a…