We all know the story about how Andrew Mitchell MP may, or may not, have tried to barge past policeman in Downing Street with the memorable phrase “you’re f…ing plebs”. Like a lot of good stories, it may not be true, and like a lot of good stories it was picked up by The Sun. So Mr Mitchell sues The Sun in libel on the basis that it is untrue.

But this decision of the Court of Appeal (CoA) is all about the reforms initiated by Sir Rupert Jackson, also a judge in the CoA, who has shaken up the whole system of legal costs in civil litigation. And one of the major steps he has taken is to compel litigants to say what they intend to spend on a case early on – the costs budget – so that the judges can make some assessment of whether the thing is to be run sensibly or extravagantly.