Tap Out! (Or I’ll Hit You Again), written and directed by Conor Dye, and performed by Matt Ackermann, is about violent expressions of male frustration. Fight Club wasn’t the first or the last word on the subject, and Tap Out! offers a specifically British version of an insecure man seduced by the allure of potentially sorting his life out via physical violence. The unnamed central character has a downtrodden existence in an insurance office, where he has a crush on a female co-worker. While waiting in a post office queue, he gets a rush of blood to his head and lashes out at an annoying stranger.

He likes how it feels, dons a balaclava and reinvents himself as a Taxi Driver-style vigilante, a ski-masked Batman, protecting women from violent men. But isn’t he just another violent man himself? The subject has relevance but the writing lacks the sharpness required; there’s also a flashback structure which lessens rather than raises the tension. Well performed by Ackermann, with nothing but a punchbag for support, Tap Out! feels like a work in progress, in need of expansion to hit its targets with a knockout punch.

Tap Out! (Or I’ll Hit You Again), Gilded Balloon Patter House, until 31 August, 6.20pm.