Why is it that so many young writers can produce dialogue that crackles from the stage but have little interest in the construction of a play? It becomes increasingly evident that many of them, perhaps not intentionally, are writing audition pieces for films, and it is no surprise to discover that Nick Grosso is in the process of adapting his earlier piece, "Peaches", for the screen.

There are many incidental joys in Real Classy Affair, but trying to discover the plot is not one of them. Most of the action takes place in a north London pub, regular meeting place of a group of local lads, all dressed in shiny suits, whose characters are well defined. In Act I, Tommy (Jason Hughes) is obviously their leader, lording it over thick Joey (Jake Wood), whose main job is getting the drinks in, the rather less vociferous Harry (Caltum Dixon) and the outsider, because he wears a different coloured suit, Billy (Joseph Fiennes).

By Act II, Tommy has vanished from the scene, and Billy is in the ascendant. We also see more of the other two characters, Stan (Nick Moran), about to leave the closely-knit group to open his own bistro in Streatham, and his wife Louise (Liza Walker), seemingly desired by all of them, through more of a sex object than a woman in her own right. While Stan is out, the now pregnant Louise is visited by Billy, who eventually strikes her to the ground.

Why, apart from the fact that Billy is a nasty piece of work? Is it something to do with the fact that she is expecting a baby, which may have been fathered by the absent Tommy? We never know, nor, seemingly, are we intended to, for this is a study of group mores, in which more lies beneath the uneasy camaraderie than meets the eye, the lads' banter disguising ambitions, on the part of Billy and Tommy, of being hard men, insecurities and a rather gruesome sentimentality when it comes to family life.

A play that poses more questions than it answers is always unsatisfactory to a theatre audience, and so with this one, despite the inconsequential brilliance of the dialogue and the sharp direction by James Macdonald.