Although dubstep’s genesis can be traced back to Croydon, helped by a handful of pioneers it has spread across the UK with each area evolving its own signature sound.

It’d be impossible to convey the diverse sub-genres of dubstep in words but just a cursory listen to, say, Bristol and London dubstep shows the two scenes are a sonic world apart. Equally, Manchester and Leeds too have recently grown their own style.

It has been put down by some as the vibe in each city being assimilated into the music. Whether it's ravey, chilled, half-time or four to the floor, cratediggers out there will be relieved that it all still falls under the dubstep umbrella.

U is also for:

Untrue: Released in 2007 on Hyperdub, Burial's second album was nominated for a Mercury Prize and put dubstep on the mainstream map. See 'B' for the whole story.