No 10's mask slips (luckily David Cameron's Mickey Mouse towel didn't)

Pity poor David Cameron. Deer-stalking in Jura was out because of a bad back. You can't get to the gym or on the bike like you used to. So you're carrying a little extra holiday weight. But, you think, going topless on the beach in Cornwall will be safe because there's an agreement with newspaper editors not to publish paparazzi shots of you on holiday – beyond those staged ones with Samantha at the picnic table. You think the world – beyond the gawpers on Polzeath beach – will never see you changing your swimming trunks under a Mickey Mouse towel.

It's no wonder, then, that Downing Street has hit the roof, accusing editors of the Daily Mail, The Daily Telegraph, Daily Mirror and The Times of breaking a "binding agreement". The newspapers claim there was only a request, not an agreement, and it was a public beach anyway. But, with less than a month to go until party conference season, it's all getting a bit heated.