TV picks: Twenty Twelve team returns with new mockumentary W1A

What to watch on TV tonight, Wednesday 19 March

W1A

10pm, BBC2

The BBC invites itself to be satirised by the team behind Twenty Twelve, the razor-sharp comedy about consultants hired to organise the London Olympics. Is this disarming/slightly smug openness, or masochism in action? Ian Fletcher (Hugh Bonneville) is now the BBC’s Head of Values, following “recent learning opportunities”, where he’s faced by an accusation that the BBC doesn’t hire enough Cornish presenters.

Crimewatch

9pm, BBC1

Kirsty Young re-examines the disappearance of Claudia Lawrence, who went missing in York five years ago, with new information about her last-known movements and appeal for help in finding two vehicles seen in the area at the time.

Line of Duty

9pm, BBC2

The final part of Jed Mercurio’s police-corruption drama seems even more topical after the revelations of the Metropolitan Police’s report into the Stephen Lawrence murder. AC-12’s investigation exposes a vicious criminal gang run from within the police, and DCC Michael Dryden (Mark Bonnar) is charged with conspiracy to pervert the course of justice.

Law & Order: UK

9pm, ITV

Ronnie (Bradley Walsh) and the team investigate the fatal stabbing of a psychiatrist treating violent adolescents.

How to Get Ahead: At Renaissance Court

9pm & 2.45am, BBC4

Rule One: make an advantageous marriage, says Newsnight’s Stephen Smith in another of his playful history lessons. The Renaissance court he has in mind is that of Henry VIII’s contemporary, Cosimo Medici, the Grand Duke of Tuscany – “the greatest ruler you’ve never heard of”.