14.14 Are we witnessing an outbreak of political hippophobia? asks Tom Chivers in what sounds like a pun gone wrong in the wake of horsegate. Will all the nation's politicians start to distance themselves from equestrianism? The hospitality boxes at the Olympic three-day eventing will stand empty. MPs' children's ponies will mysteriously disappear from the stables; the price of glue shall plummet. Nick Clegg will spectacularly misjudge the public mood and buy shares in a racehorse called Cotswold John. 14.06 In other horse-related news, Fourth Estate has won the 2pm at Doncaster. 14.02 Labour deputy leader Harriet Harman has a crack at the whip with some choice words about Mr Cameron: People will be dismayed that while News International was busy hacking phones, David Cameron was out hacking with Rebekah Brooks's husband. David Cameron has not been straight about just how close he was to senior executives at News International and it's time for him come clean about the extent of this relationship. 13.39 The retired Met police horse would seem to be the mane issue for Lord Justice Leveson, who yesterday raised concerns about leaks from his inquiry into press ethics: I am disturbed about it, not only because leaks would constitute a breach of the confidentiality agreement that everybody has signed, but also because it runs the risk of disrupting the way in which this inquiry can proceed. 13.38 We now have news that although the Prime Minister did ride Mrs Brooks's police horse, he did not wear pyjamas. Number 10 was asked whether Mr Cameron had followed Sarah Brown's example and hosted a pyjama party for Mrs Brooks. 13.31 But on a serious note, this is clearly a story that will run and run. Tom Harper, who broke the story in the Evening Standard, tweets: 13.28 Over at The Guardian, Horsegate is summed up with a small but perfectly formed pun: "Mounting row." Ian Katz, deputy editor, tweets: 13.22 Here's more now on how former journalist Paul McMullan trotted out a rumour that Mr Cameron had been horse riding with Mrs Brooks. Christopher Hope writes: Mr McMullan had been recorded in an undercover investigation by the Hollywood actor Hugh Grant for an edition of the New Statesman magazine, which was being edited by Jemima Khan. Mr McMullan had told Grant: "Cameron went horse riding regularly with Rebekah. 13.15 Blogger and senior fellow of the Taxpayers' Alliance Mark Wallace takes on Rupert Murdoch's reference to Mrs Brooks saving an old horse from the glue factory: 13.08 Dan Hodges has written a throroughbred blog on how the going is rough for the Prime Minister at the moment. David Cameron's "man of the people" image may have taken a bit of knock. But I'm not sure he ever really had one to begin with. Labour officials have been excitedly telling themselves Cameron's riding is set to do for him what John Kerry's windsurfing did for his presidential ambitions. But Kerry was caught on film, and in the case of Brooks and Cameron no one managed to land the money shot. In fact David Cameron should look on the bright side. He only got caught on a horse. What if Rebekah Brooks had been into bungee-jumping? Or morris dancing? Does it matter that David Cameron rode Rebekah Brooks's horse? 13.02 Labour MP for Rotherham Denis MacShane makes a serious point about Horsegate: 12.58 The Sun's political editor Tom Newton Dunn suggests the PM might be trying to bolt the stable door, so to speak, ahead of the third module of the Leveson inquiry, which looks at the relationship between politicians and the press. 12.45 The events of the last four days started with allegations made by former NOTW reporter Paul McMullan. Events then quickly gathered pace: Tuesday: The Met confirms Rebekah Brooks was lent a retired police horse. Number 10 denies knowledge of PM riding the horse. • Wednesday: PM continues to deny he rode Raisa, saying he is only interested in horse-racing. • Thursday: PM admits riding horses with Mrs Brooks's husband Charlie but keeps his silence in which horses he rode, later admitting it was likely he rode Raisa. • Friday: David Cameron admits he did ride the horse in question. 12.36 Telegraph.co.uk blogger Dan Hodges wants to know the hoof, sorry, truth about the fate of Raisa. 12.32 Labour MP Tom Watson said Raisa could come to be a nagging symbol of the relationship between politicians and press in the wake of the phone-hacking scandal. He told the Telegraph: This horse is becoming the symbol of this scandal. Metropolitan Police Horse 12.20 To recap, details of the loan of the horse to Mrs Brooks were believed to have been given to the Leveson Inquiry last month as evidence. The Evening Standard, which appeared to have seen the evidence, reported she "fostered" the horse after it retired in 2008. Former News International Chief Executive Rebekah Wade at Royal Ascot Races (Rex) The scandal, fast becoming known as "Horsegate," has run into a fourth day after David Cameron admitted he rode the horse named Raisa.