For south London teenager Yemi and his elder brother, Ikudayisi - recently arrived from Nigeria - popping out for a pint of milk into the concrete walkways of the local estate becomes an odyssey that gets right under the skin of multicultural Britain.
The Royal Court Young Writers festival have scored again with Bola Agbaje's debut, a comedy that asks: how do we know who we are in modern Britain? Like the play itself, Bijan Sheibani's beautifully acted production takes a little while to find its confidence and style, but when it does it lifts the lid on the lives of teenagers whose confusions are not so much hormonal as the product of an identity crisis, the pressure of street rivalries, and the fact that Africans and West Indians have little understanding of their shared history.
Racism takes many forms here. There are odd scenes - such as an encounter with the police - that don't quite come off, but for most of the evening the production rings true, whether it is the gobby insecurities of the mixed-race Armani (Zawe Ashton, very good), who wants to pick a fight with anyone she thinks doesn't give her due respect, or the reaction of the elderly white woman whose expectations are so low that when Ikudayisi offers her a seat to rest she is convinced he intends to mug her.
James Cotterill's nifty design turns the entire theatre upstairs into a soulless concrete wasteland, and in an outstanding cast, Tobi Baker and Tunji Lucas are engaging as the brothers negotiating their differences and discovering what they share and who they are.
· Until February 17. Box office: 020-7565 5000.
