Banish all preconceived notions of improv being cringey or stilted, as there are no such qualms when it comes to the Scat Pack troupe. The premise is to create an entire film from scratch, directed by a chirpy host (Oscar, naturally) who pauses, fast-forwards and rewinds the action to throw guidelines at the performers or enhance particularly funny scenes.

The audience make good tonight with their suggestion of a gangster flick set on a cider farm in Somerset, entitled Keep Your Hands Off My Apples. And the performers are routinely excellent, making it difficult to comprehend there’s no script involved.

Absolutely anything goes and the cast throw caution out the window as they bound over the lecture tables and the audiences’ heads, (‘glorious 3D!’ roars Oscar) and produce moments of sheer lunacy that leaves the audience in stitches. These guys are disgustingly talented, absurdly creative and absolutely recommended.

Underbelly, Bristo Square, 0844 545 8252, until 27 Aug, 4.50pm, £10–£11 (£8–£9).

Lights! Camera! Improvise! - Scubahero