You really have to wonder what Harry and Meghan, hunkered down in their Montecito wellness bunker, currently make of the reaction to Harry’s memoir Spare, which has been leaked to the world over the past few days. So far the book has made headlines for Prince Harry’s tales about losing his virginity in a field next to a pub (and being subsequently slapped on the rear by the older woman), his frostbitten penis, talking to a bin after taking magic mushrooms and a scrap with his brother that led to him falling on a dogbowl and breaking his favourite necklace.

Mr...