The phrase ‘Shakespeare comedy’ is an oxymoron with a long pedigree, one which perhaps stretches back to the late 16th century; and a running joke in Ben Elton’s Upstart Crow is that no one finds the comedies funny except their author, who thinks they’re hilarious. So it is a brave writer who, in a bid for laughs, bases a Shakespeare comedy on a Shakespeare comedy — in this case The Comedy of Errors.