"I'll be remembered as the second man to swear on the BBC." Listener Sir Peregrine Worsthorne remembers how his mother tamed Lord Reith's foul temper; how his father ran the Bank of England with little understanding of economics; and how he himself created a scandal by using a four-letter world on the BBC. Also, Charlotte Green reads Your News. With Eddie Mair. iPM@bbc.co.uk.