There is so-bad-it’s-good comedy then there is so-bad-it’s-bad comedy like this. Having been advised by an impartial source that this fairy tale send-up has elements of the Mighty Boosh about it, I’m afraid one can safely say that Julian Barratt and Noel Fielding need not lose any sleep.

Tommy Turner, Marny Godden and Greg Finnegan play various parts in a potentially promising pastiche involving a journey into another dimension in search of a magic key. Along the way there are frequent swipes at Hollywood. A cliché, perhaps but not problematic if executed with finesse. Here they are handled with all the subtlety of a hobnail boot in the face.

Any hint of humour is overshadowed by a witless reliance on cheap vulgarity as Pulp Fiction, The Matrix and The Karate Kid are feebly mined for laughs. No amount of zesty exuberance and silly shoestring props can compensate for toilet jokes that would shame a first-year medical revue.

Turner, Godden and Finnegan perform with plenty of enthusiasm but the script is so desperately thin it has to be padded out with daft dances to Kate Bush’s Wuthering Heights and a spot of gratuitous robotic jigging. At well under an hour at least proceedings are mercifully short. It might be best if everyone involved stays in that other dimension until they grow up.
Until 29 November (0207 704 2001, www.unrestrictedview.co.uk)