The Hippopotamus review

Roger Allam savours a juicy starring role in an otherwise half-hearted farce.

The best sitcom on radio? John Finnemore's series about the four staff on a one-plane, tinpot charter airline - and it's just as silly and as tightly constructed as ever in its fourth run. Roger Allam stars as suave, incredibly untrustworthy first officer Douglas, with classy support from Stephanie Cole, Benedict Cumberbatch and Finnemore himself.

Light relief in the dreary first full working week of the year came from the return of Cabin Pressure to Radio 4. One of the station's few contemporary sitcom successes (more on that subject another week), it has lured Benedict Cumberbatch and Roger Allam back for a fourth run at playing odd-couple pilots Martin and Douglas. The pair man MJN Air: a tinpot, one-plane budget airline owned by middle-aged divorcee Carolyn, played by Stephanie Cole. It's an impressive cast - Allam does a great line in supercilious grumps and he is in his element as the snarky first officer to Cumberbatch's prissy, uptight captain. But perhaps the real star of the show is its writer John Finnemore, who also plays Carolyn's doofus air-steward son, Arthur.

"The code red is there to stop me being too helpful, and I can't stop being too helpful by being more helpful," he bumbled at his mum, in a script packed tight with superb lines. The crew had assembled for Birling Day, the annual jolly enjoyed by their stupidly rich (and often drunk) regular customer, who charters a flight each year to take him to see the Six Nations rugby final. Except this year, the match was taking place at Twickenham, a short drive from Birling's own house. No matter.

After a row with his wife and in a fit of pique, Birling ordered a trip to watch the match in Timbuktu. Miles of daft behaviour followed, the highlight being Allam's smug laugh - "Madame is a humourist?" - as Douglas bartered with Carolyn over a bottle of whisky.

Hurray! Here's the fourth series of John Finnemore's splendid comedy made magical by the brilliance of its cast. Stephanie Cole plays Carolyn Knapp-Shappey, formidable owner of a one-plane airline. Benedict Cumberbatch is the sole Captain, Roger Allam as First Officer provides a one-man masterclass in timing and Finnemore himself plays the owner's cheerfully hapless son. There's enough here to banish the New Year blues, even if your electricity bill just arrived.

The last full series of Armando Iannucci's blistering satire brought us a coalition government, carrying an innefectual junior partner and fighting a weak, disorganised opposition. But aside from the contemporary echoes, the show stuck to what's been its central point all along: that so much modern politics is a series of PR stunts and botches, conceived not to make the world better but to get or keep power. The hour-long inquiry episode was riveting, Roger Allam shone as the newly empowered (in theory) Peter Mannion, and Peter Capaldi's fearsome spin doctor Malcolm Tucker bowed out in a final episode to rank with any sitcom finale.

Frears and screenwriter Moira Buffini make a funny, touching and witty film out of Posy Simmonds' marvellous cartoon strip that spatchcocks awful middle-class country life. Gemma Arterton is a delightful Tamara Drewe, the young woman who returns to her native west country village with a nose-job, micro-shorts and an ambition to write a chicklit blockbuster; she understandably stirs up the passions of ex-boyfriend Andy (Luke Evans), pop star Ben (Dominic Cooper) and slimy middle-aged philanderer Nicholas (Roger Allam).

"No smiling. Not even a wee Anne Robinson. The look we're going for should be solemn respect. Like blokes modelling underpants," scolds Malcom Tucker (Peter Capaldi) to his team in this fifth episode of Armando Iannucci's political comedy series, back after a one-week hiatus. Tonight, Nicola Murray (Rebecca Front) and Peter Mannion (Roger Allam) are both on the back foot after the unravelling of the key-worker housing sell-off policy.

It does sometimes seem like just one-long exchange of well-crafted insults, but Armando Iannucci's comedy of political (bad) manners is one of the most purely enjoyable things on television. This week a reluctant Peter Mannion (Roger Allam) has been dragooned into a "thought camp" in a rural hotel with no mobile signal. And then the proverbial hits the fan.

Dressed like 'the manager of an organic wine bar', a disgusted Peter Mannion MP (the incomparable Roger Allam) is obliged to attend an isolated 'Thought Camp' in the country, run by - who else - the detestable Stewart Pearson. As ever, Pearson doesn't so much engage as vomit up a continual stream of corporate ticker tape and New Age sewage: 'Isolation is the mother of renewal'; 'Time is a leash on the dog of ideas.' Mutters a ball-tossing Mannion: 'Some of us had to go through this hippie shit the first time around.' Back at HQ, Adam and Fergus aren't so much holding the fort as putting it to the torch and leapfrogging in the ashes - having bought a taxpayer-funded bank 'out of social embarrassment'. And then tragedy strikes. Glorious.