Religion, and a sense of the revival of belief, is such an important part of everyday life in the wider population that it is one of the stranger facts about contemporary theatre that so few plays tackle this subject. In fact, the last new British play to do this at the National was David Hare’s Racing Demon in 1990. Now, 20 years later, the same Cottesloe theatre space bears witness to a new play, which opened last night, about the same subject.

With a title like that, and a slug across the posters that so boastingly prejudges last night's premiere, some of us might keep our sceptical specs on when we turn up at the spirits-lowering Peacock Theatre to see this latest leap by mainstream stage forces onto the bandwagon of the most exciting trend in dance of the past 15 years. Sheathe those sceptical specs. This is a show blazing with talent and young exuberance, and it will rejuvenate you faster than a Red Bull.

It's common to feel a real sense of doom when you approach the Elephant and Castle Shopping Centre. But it’s not the dodgy hoodies that turn your legs to jelly, it’s the sheer ugliness of the architecture. Yes, aesthetically, this is urban hell. But it’s also the site of the Royal Court’s Local project, in which a rundown shop unit has been turned into a makeshift theatre. Random, a spirited revival of Debbie Tucker Green’s 2008 play, is the first of a season of edgy dramas to make the trek from Sloane Square to Southwark.

Over the past decade, much of the energy in new writing has come from black Britons. Homegrown talents such as Roy Williams, debbie tucker green and Kwame Kwei-Armah have sent us updates about the state of hybrid, streetsmart culture, and alerted us to the experiences of minorities. In doing so, they have reinvented punchy dialogue, with stage chat that zips along with dizzy humour and linguistic freshness. Hot on their heels comes Bola Agbaje, whose latest play has just opened on the main stage at the Royal Court.

Early on in Michael Samuels’ unremittingly sombre film about Winnie Mandela, the star-crossed heroine made the observation that being married to Nelson meant you were also married to “the struggle”, and would inevitably end up in Nelson’s shadow. So it proved. Even as she went to meet Nelson (David Harewood) as he was finally released after 27 years in jail, Winnie (Sophie Okonedo) was advised to learn from the example of Prince Philip and the way he walks dutifully one step behind the Queen.

Roy Williams is one of the most prolific, and most lauded, British playwrights. Born in Fulham, south-west London, in 1968, he had by his mid-30s already won a shelf-full of awards, to which he added an OBE in 2008. His debut, The No Boys Cricket Club, won the Writers’ Guild New Writer of the Year award in 1996. Two years later Starstruck won three major awards. In the early 2000s Lift Off and Clubland were also successes. In 2004 Williams won the first Arts Council Decibel Award, given to black or Asian artists in recognition of their contribution to the arts.