Graham: Graham Rex

This four piece sketch show hold great promise. Despite being Fringe rookies, much of their show is made up of measured, intelligent humour. A few references are a bit 'youth' and when you're old enough to be their mum (a young mum I might add) they can seem a little blinkered – Harry Potter, social media etcetera – but elsewhere they show a wider knowledge with a lovely 'topical' sketch and a deconstruction of Mitt Romney's policies. It's inventive too with a surreal skit featuring Boutros Boutros Ghali and a chain of philosopher's teachings.

Along the way there's a bit of endearing corpsing as the troupe throw in a bit of improv every now and again but it doesn't feel like sixth form in-jokery as can so easily happen in shows with mates in the crowd. Their material is sharp enough for their asides to be earned.

With just a touch of tightening up in script and performance, you can easily imagine them being a group we'll be hearing a lot from in future Fringes.

Underbelly Bristo Square, 0844 545 8252, until 27 Aug (not 14), 12.10pm, ￡8-￡9 (£7-￡8)