A plane has been shot down over London, the biggest terrorist attack on this city since the 7/7 bombings. That’s the imagined scenario in this transfer from new writing hub Theatre 503 into the West End. Playwright Stuart Slade is very much a hot new thing, with writing that challenges perceptions and form. It’s very funny, and deals with the voyeurism of social media and the news, as we join a group therapy session for those dealing with the aftermath of the attack. Tickets are £15, and every seat’s a good one in the smaller Studio 2.