A Big Trout in a Small Pond

Z Theatre Company is ablaze with youthful enthusiasm and fling themselves into this fast-paced sketch show. There are some cracking moments, such as the Barry Scott number, but their young outlook is also their downfall, with too many obvious sketches relying on a naughty word for the punchline.

Royal College of Surgeons, 0845 508 8515, until 20 Aug (not 16), 6pm, £5.50 (£4).