Main Stage: Di and Viv and Rose

Hampstead is on a roll. Its superb production of David Hare’s The Judas Kiss starring Rupert Everett as Oscar Wilde has just transferred to the West End, and I have a hunch that this lovely new play by Amelia Bullmore could follow it there.

There is a mixture of warmth, humour and sadness in both the writing and the performances that is very special indeed.

Years ago there was a TV series called Take Three Girls about three young women sharing a flat in swinging London, of which the only thing I can distinctly remember is the haunting theme tune, Light Flight, by the folk group Pentangle.

Perhaps Bullmore had subliminal memories of it too, for her play concerns three female students who meet up as Freshers at a provincial university in 1983 and share a house together. We then follow them through the years, up to 2010, and discover what happened to them and the strains and crises that their friendship endures.

You come to care deeply about all three characters. Rose is a posh, scatty history of art student, an innocent abroad who makes the wonderful discovery that if you ask a boy to sleep with you he almost certainly will. Di is a no-nonsense lesbian on a business studies course who is exceptionally sporty, while Viv is an earnest and reserved sociology student who dresses in 1940s clothes, observing others sharply and revealing little of herself.

There are moments here that made me cry with laughter, nor least when all three girls dance wildly in their sitting-room to Prince’s Let’s Go Crazy pumped up to max on their sound system.

But this is also a play that cuts deeply and asks hard questions, about the nature of kindness for instance, and the way friendship can decay just like everything else. There are moments in the second half that are overwhelmingly moving as the characters experience the thousand natural shocks that flesh is heir to.

Anna Mackmin directs a sharply observed, richly enjoyable production, elegantly staged and mixing laughter with sudden jolts of pain and loss. The cast is also outstanding. Anna Maxwell Martin is delightfully funny, warm and touching as Rose, who finds warmth and comfort in the beds of virtual strangers to the dismay of her friends. Tamzin Outhwaite is moving as the brisk straightforward Di who is helped by her friends through a terrible ordeal, while Gina McKee gives a fascinatingly persuasive performance as the kind of person who maintains an air of tantalising reserve in even her closest relationships.

One thought struck me as I left the theatre. Excellent though it is, the play might be even more poignant if it moved backwards rather than forwards in time, like Pinter’s Betrayal and Sondheim’s Merrily We Roll Along. But I suppose smarty-pants critics like me would have accused Bullmore of lack of originality had she taken that option.

A nice stage direction in Amelia Bullmore’s playtext has a character “mangled by laughter”. It comes late on, when the middle-aged speaker is relating a genuinely painful humiliation and loss to a lifelong friend who minutes earlier was an enemy. It’s a complicated, unpredictable, truthful and brilliant moment.

Directed by Anna Mackmin and promoted from the theatre’s excellent try-out studio to its main stage, Di and Viv and Rose follows three university housemates over 27 years. It may be described (ie, written off by haughty chaps) as a women’s-interest piece, but that would traduce something funny, universal and wise. It is about friendship, sexuality, and sex, growing up and changing tack, intimacy and comradeship, corsetry and careers, success, disaster and dissatisfaction. It compasses illness, loss, loneliness and loyalty .

Tracksuited Di (Tamzin Outhwaite) is Amazonian and gay, Rose (Anna Maxwell Martin) whimsical, promiscuous and anxious to please. Viv (Gina McKee) is serious and academic and appals Rose by dressing “as if it was the war” in shirtwaisters and thick tights. Their cohabitation is beautifully drawn: arguments; launderette rows; Viv’s attempts to read her dissertation on the feminist history of dress; plain speaking about Rose’s headlong promiscuity; and Di’s brilliant slapping-down of her “bi-curious” attempt at a girl kiss: “I know your sort. Time waster. Technically inept.” Much of it is unforcedly funny; a ridiculous drunken dance to Prince’s Lets Go Crazy gets a storm of applause.

Time accelerates, as anybody over 40 knows to their cost, and through a series of meetings comes attrition and change. Bullmore knows how to deliver a jolt, and there are two major ones, each sudden and shocking. The trio’s balance is upset more than once, nicely symbolised by three wobbly bargain soup bowls from student years that need Blu-Tack to stabilise them. But it is not always the same member of the group who has to do the stabilising.

Paul Wills’s design artfully makes the shared student house the only fully realised set. Later scenes are spare, plain and mainly propless, until a final unexpected tableau takes the three home again to the lost land of youth. It’s a play that will last.

The play is hard to resist, mainly thanks to the bewitching character of Rose.

She is played by Anna Maxwell Martin and we meet her first on the payphone of her new college digs.

Enter Di, a sporty, plain-talking lesbian (Tamzin Outhwaite), and Viv, a repressed intellectual. Feminist Viv (Gina McKee) wears such dowdy, 1940s-style clothes that Rose refers to her as Mrs Miniver.

Yet the three girls soon become friends and they decide to share a house.

On one level the play is a simple tale of young women growing up together, a campus version of TV’s Liver Birds. Most of the first half takes place in the living room of their digs. It is a scene many 1980s graduates may recognise. Yet Miss Bullmore also, with gentle warmth, writes a chatty, arresting elegy to friendship – I should perhaps say female friendship.

So long as Miss Maxwell Martin is on the stage, the thing bubbles. I say that not only because her Rose reminded me – hauntingly – of my wife’s dearest friend but because this is a gentle, affectionate work which deserves a fair wind.