By Natalie Bennett

The parliamentary press gallery in Westminster is often accused of treating their subject as though it were a football game: points are “scored” off ministers by their shadows, attacks are “lobbed back”, you’re a member of the “team”. In Whipping It Up, which premiered last week at The Bush Theatre, writer Steve Thompson has gone further: this is politics as Machiavellian ping-pong played for laughs.

The scenario is a complicated but just believable one. It is late December, 2008. The Tories are in power, with a majority of just three. The setting is the hyper-realistically staged Whips’ Office, which has reverted to what Maggie (Fiona Glascott), the formidable Labour Chief Whip who used to call this home, calls a “a public school dorm”.

Traditional Tory voters were to be granted an early present – a bill to tax tents unashamedly aimed at the traveller community. It is designed to show them that the softie, “leftie” PM — no prizes for guessing who that is — is really one of them. But the scouts are upset, because they’ll be hit by the tax too, and then, on the morning before the vote, a farmer shoots for no reason a couple of traveller children. Suddenly, it seems, the political mood has changed, and the government is in trouble on a bill it saw as a shoo-in.

Leading the charge to rally the troops is Alastair (with a powerful performance from Robert Bathurst), the deputy chief whip who throws terror into the hearts of young blue-blood backbenchers such as Guy (a suitably nose-in-the-air Nicholas Rowe). His metaphors are drawn not from football but from Sandhurst – he’s a man who’d be right at home in the age of Kipling – the soldier MP must always be ready to lay down his life (or at least his career) for the party.

The jokes run thick and fast, but always along familiar lines. These denizens of the “Westminster village” regard their constituencies with contempt: Happiness, Alastair declares, “is the sight of one’s constituency slowly disappearing in the rearview mirror.” The description of David Cameron – the real-life Tory leader – mirrors many a grumpy rightwing editorial: “He’s not ‘proper’ – he’s just got an easy style. All that crap with the bike! We put him up front as a veneer. Plenty of old gargoyles in the Cabinet biding their time – hoping he would win the elections, then expose himself as a lightweight so that they could step in and take up the reins.”

Many of jokes too are, by the standards of today’s public discourse, grossly sexist. That’s in line with these characters, but they do become wearying.

It is curious — and perhaps revealing — that Whipping It Up is being staged at Shepherd’s Bush – these further reaches of Zone 2 are about as far as you can get from the Westminster Village and still be in London. That’s reflected in the programme, which contains a “glossary of parliamentary terms” containing explanations of “three-line whip” and “sally gate” – terms not often found in the Daily Mail.

And the audience was one that, you felt, were mainly Mail readers, drawn in by the presence of one actor, Richard Wilson, best known for the hugely popular One Foot In The Grave., in which he played Victor Meldrew, a grumpy old man.

He reprises that performance here as The Chief – rather sleepwalking through the role, out-acted by the rest of the cast. Not that it upsets the fans. The atmosphere at times reminded me of seeing Madonna in Up For Grabs at the Wyndham. The fans were prepared to guffaw in appreciation every time Wilson opened his mouth, even though he was out-acted by everyone else on stage.

His mirror figure is the young Tim (Lee Ross) – the sort of character who in Thatcher’s time would have been called a barrow-boy Tory. Ross plays this part with fierce gaucheness that works well. But yet again, it is a figure explored again and again in fiction and drama, and has nothing new to show us.

Thompson has much to offer in comic timing, dramatic plots twists and clever lines in this political farce, but he doesn’t have new ideas, images or angles to offer that would make it more than a light piece of entertainment – about as satisfying as watching an episode of One Foot in the Grave. But if that’s enough to get you out on a December evening, then get in early; Wilson’s drawing power means tickets are nearly sold out.

Update: This production of Whipping It Up has now transferred to the New Ambassadors in the West End, booking from 22 February to 16 June.

The production continues at The Bush (with online booking) until December 16. Other views, more complimentary than mine: Michael Billington in the Guardian; Charles Spencer in the Telegraph;