David Tennant’s Richard is the love child of Richmal Crompton’s Violet Elizabeth and Harry Enfield’s Kevin. He’s a spoilt brat surrounded by giggling sycophants who obsequiously applaud each of his successively disastrous decisions. He makes sarcastic asides, is impatient with the old and tumbles blithely into chaos. Even when the game is up, and he’s ordered to submit the crown to Bolingbroke, there’s a suggestion he’s going to stamp his foot and say ‘shan’t’ or ‘it’s so unfair!’ Tennant is very funny, and there are plenty of laughs, but Richard is an unpleasant character and only someone with Tennant’s huge popularity can pull it off.