I have previously written unsuccessfully to The Times about 'off his own back' (sic), so I enjoyed this letter from Saturday's edition:
Sir, Mrs Malaprop would be in her element had she been commentating on the Olympic Games this year. She would have had stiff opposition, however, to judge by the mangled idioms spoken by several of the commentators: 'Off his own back'; 'They are having a conflab'; 'Edging their bets' and that old chestnut 'In one fowl swoop'. The abundance of regional accents on radio and television is to be applauded but ignorance of the language is not.