At first, The Sex Party looks like a retro BBC sitcom about swingers, although that term is banned at this adult shindig. Four couples collect for sex and nibbles at a cool north London postcode. There is gleeful talk about getting it on and a fair share of parading around in lingerie and thigh boots.
But Terry Johnson’s spiky comedy takes us from the familiar fare of smut and sniggering double entendres to something bolder and more awkward in the sex/gender debate at its centre, even if it does not reach a satisfying end.