Black Mirror's series two opener 'Be Right Back' was a compelling mix of light and dark, while last week's 'White Bear' was unremittingly bleak. But with series closer 'The Waldo Moment' being billed as a political satire of sorts, I'd expected a drama infused with moments of dark humour - something akin to series one's brilliant 'The National Anthem'.

Anyone who's seen that memorable episode or indeed an edition of Newswipe knows that Charlie Brooker can be brilliantly scathing about politics, but unfortunately 'The Waldo Moment' fell short of my expectations.

The film follows Jamie Salter (Daniel Rigby), a failed comic in low spirits - his personal life is in tatters and his job - voicing a cartoon bear named Waldo on a political satire series - is deeply unsatisfying.

Waldo's latest target is Tory politician Liam Monroe - brought to slippery life by Tobias Menzies - but what...