Prince Harry has revealed the cosy nicknames he and his brother Prince William have for one another in his controversial new book Spare .
A remarkable extract from a leaked copy of the memoir, ahead of its official release date on Tuesday, revealed a physical encounter between the pair.
The Duke of Sussex claims his brother, now the Prince of Wales, grabbed him by the collar, knocked him to the floor and injured his back as he landed on a dog ball which smashed as he fell on it.