I’ve seen some great Coward, I’ve seen some iffy Coward, but for the most part you can rely on him to provide you with a sophisticated comedy of manners, probably involving at least one maid, some aristocrats and an outsider to shake things up. His most renowned comedies are from the 20s to the 40s, and as he got older I think it’s fair to say that on the whole the quality went down – at least, that’s what my experience of Volcano tells me. Relative Values, however, is from 1951, when he still definitely had “it”, whatever “it” was.

Even though it had been six years since World War Two had ended, it was a time of austerity. There was still meat and sugar rationing; we think times are hard now – it must have been very much worse for that generation. “Things were changing” too, generally speaking. Five years after Relative Values, John Osborne gave us angry young Jimmy Porter as a reaction against the drawing room comedies of Coward and Rattigan. But actually – Relative Values is a forward-looking play for its time and has its finger on the pulse of the changing society. Countess Felicity is best friends with her lady’s maid and looks on her butler as a senior member of the family. Certainly, there are still reactionary stick-in-the-muds, as represented by Admiral and Lady Cynthia Hayling, but the young Earl Nigel is moving with the times sufficiently to want to marry someone whose celebrity status derives from films and glossy magazines rather than country estates with horses and hounds. The traditional statuses of aristocrat and servant are further confounded by the realisation that, if Nigel and Miranda marry, the new Countess will be the sister of the present Countess’ lady’s maid. Still, noblesse oblige, and all that, and the only person to whom this is an insuperable problem is the maid herself. Cue for some fantastic comedy that blurs the lines between the classes and has the maid pretending to be an old family friend/companion – and that’s actually way funnier than it sounds.

This is a production from the Theatre Royal Bath (don’t they do some good stuff) that first saw light of day last year but only transferred to London for a brief run this spring. It’s the kind of play and production that sits so elegantly and beautifully in a West End theatre, a space it occupies as to the manor born. Looking at the photo in my French’s Acting Edition, designer Stephen Brimson Lewis has very accurately revived the original 1951 set, and all the costumes are suitably functional or sumptuous, depending on which character we’re talking about. Director Trevor Nunn has interspersed the different scenes with mock Pathé newsreels showing 1951 in the raw – some of the footage is real, but I recognised the narrator as Rory Bremner, who played Crestwell the butler until a few weeks ago. This all helps to contextualise the play to its time whilst still being eminently 21st century as it features members of the cast in its black and white clips. We’re not allowed to have two intervals anymore, so this classic three act play is broken up halfway through the second act, which is a slight shame as it not only reduces the impact of the tremendous line with which Coward ended Act One and which got a spontaneous round of applause, but also introduces the interval with much less of a cliffhanger.

Nevertheless, it’s a fantastically entertaining show, with some absolutely superb performances. Patricia Hodge plays the Countess and she’s every bit as splendid as you could imagine. Cut glass accent with a sneaky touch of warmth to it, decorous eyes that have seen it all but are far too polite to react to indecorous behaviour, and unsurpassable comic timing all make for a memorable performance. Her maid and best friend Moxie is played by Caroline Quentin, who is fantastic as the no-nonsense but heart of gold servant – loyal, traditional but never servile; and whose conversation, when she’s upgraded to companion, is a stroke of comic genius. Her transformation from drudge to socialite is devastatingly hilarious. She brings the house down as she blisteringly patronises Lady Cynthia – one of the funniest moments I can remember in a play for a long time.

You need a really good cast to balance the rest of the play when you’ve got two such superb performers acting their socks off, and, delightfully, that is exactly what we have. I’ve not seen Neil Morrissey live before but I’d forgotten what an excellent comedy actor he is – all those Men Behaving Badly days shared with Caroline Quentin seem an awfully long time ago, but they still have a terrific rapport together, and you can see he’s really enjoying himself too, which encourages the audience to do so too. Steven Pacey, superb in the Menier’s Charley’s Aunt a couple of years ago, has a fantastic mischievous twinkle in his eye as Countess Felicity’s nephew Peter, revelling in the hilarity of all the scrapes they get themselves into, and belly-achingly funny when he has his sexuality challenged by sudden proximity to the hunky leading man, staying just on the right side of cliché to maximise the humour. Leigh Zimmerman is perfect for the role of film star Miranda Frayle, stunningly tall and elegant, disdainfully making up stories about the poverty of her childhood, much to Moxie’s disgust – another example of the somewhat skewed look at class that Coward creates in this play. When she meets up again with old flame Don Lucas, dashingly played by Ben Mansfield, and Lady Felicity catches them “at it”, it’s only a matter of time before she’s a lamb to the slaughter and no mistake. There’s also excellent support from Amanda Boxer whose Lady Cynthia is as crusty as a vintage port, and Timothy Kightley, an excellent old stick of a retired admiral, who never quite knows when to shut up. Sam Hoare’s Earl Nigel is a chinless dimwit manipulated by every woman he meets, and Rebecca Birch is a nicely irreverent housemaid in the best Coward tradition.

The play and production delivered so much more than I was expecting of it. Mrs Chrisparkle and I absolutely loved it, and I’m so glad we snuck in to see it just before it closes next week. If you can get yourself down to the Harold Pinter Theatre (that’s the Comedy Theatre in old money) before Saturday 21st June, you won’t regret it.