In a night charged with anticipation and indie rock fervour, London’s Roundhouse venue  played host to a blistering set from The K’s — but it was Essex alt-rock outfit The Bracknall who first lit the fuse. Opening for one of the UK’s fastest-rising live acts is no easy feat, especially at a venue as revered as Camden’s Roundhouse, but The Bracknall delivered a commanding, confident performance that firmly positioned them as serious contenders in Britain’s new wave of guitar bands.