Perhaps it was the late Peter Barnes's Jewishness that allowed him to look with such wry askance at Britain's class system. I suspect in 1968, an age where deference was still being dismantled, this attack on aristocracy packed a bigger punch than now.

Just as well then that as the insane Earl of Gurney who not only has a messiah complex but is to take his place in the House of Lords after his father accidentally hangs himself, director Jamie Lloyd has again conscripted James McAvoy as the lead. As Macbeth he was terifically single minded, here he's anything but as he juggles multiple personalties. One minute he is all serene calm and charm, the next he's as terrifying as a homicidal maniac.

But as our leaders' Bullingdon Club antics suggest, no bad behavior is too bad for this country's ruling classes. With a government run by Eton boys, the real shock here is that this satire is as relevant as it was nearly half a century ago.