From the beginning, the intention was clear. "Five bad boys with the power to rock you," came the shouty introduction in their first video, all hoodies and hair gel, the bandmates swaggering through a dim, strobe-lit corridor that suggested they might be trespassing - or at the very least, flouting a health and safety rule or two.

It's been five years since since we last caught up with Gavin and Stacey, and, more importantly, since Nessa got down on one knee to propose to Smithy.