From Media Law by Geoffrey Robertson, Q.C. and Andrew Nicol, Q.C., I quote:
The arcane offence of scandalum magnatum was created by a statute of 1275 designed to protect “the great men of the realm” against discomfiture from stories that might arouse the people against them. The purpose of criminal libel was to prevent loss of confidence in government. It was, essentially, a public order offence, and since true stories were more likely to result in breaches of the peace, it spawned the aphorism “The greater the truth, the greater the libel.” Overtly political prosecutions were brought in its name, against the likes of John Wilkes, Tom Paine and the Dean of St Asaph. Truth is not a defence, unless the defendant can convince a jury that publication is for the public benefit. The burden of proof lies on the defendant, who may be convicted even though he or she honestly believed, on reasonable grounds, that what was published was true and a matter of public interest.
Some of our readers are learned in the law of the land. I appeal to you, find a way to bring a prosecution against divers great men of the realm, to whit David William Donald Cameron and Daniel Grian Alexander. Should not the law apply equally to great and small? Find grounds to bring suit against Cameron and Alexander for their criminal libel against James Anthony Patrick Carr, against whom said Cameron and Alexander, abusing their office, did arouse the fury of the mob despite Carr having broken no law.