Just finishing off. Never tried The Listener before. Good fun, I thought, but slightly confused about 12 Across. I've got 'singing', but the line on the grid comes between the final n and g. Could this be a printing mistake or am I way off?
I've finished apart from one letter - the unchecked letter in 17 across. I know what it probably is, but to confirm it I should be glad of a nudge for the play/film/book title for that clue. I know of three Lake Poets, but there are an awful lot of Prime Ministers.