[1] The name was taken from The Proms, a classical music festival running since 1895, and borrowed a few traditions from its counterpart such as the final night culminating in an interpretation of "Land of Hope and Glory".

The musical performances at the festival typically involved indie rock bands incorporating instruments outside of their usual arrangement, most commonly in the form of collaborations with the BBC Concert Orchestra.

Primarily the festival's headline acts played at The Roundhouse in Camden but events, which included a programme of film, were not limited to this venue.

; Candie and Howard; Elliott Payne Mark Ronson and the BBC Concert Orchestra (with guests Daniel Merriweather, Charlie Waller, Candie Payne, Wale, Ricky Wilson, Sean Lennon and others);[4] The Coral; Editors; Blanche; Charlie Louvin; Sigur Rós; Siouxsie Sioux; Agaskodo Teliverek; Daft Punk's Electroma; The Beatles' Help!

; The Enemy; The Chemical Brothers; Justice; Tribute to Lal Waterson Kaiser Chiefs via David Arnold;[5][6] Reverend and The Makers; New Cassettes; Cold War Kids; The Metros; Daler Mehndi and The Wolfmen; Bishi; Basquiat Strings with Seb Rochford, Ellery Eskelin and Simon H Fell Bloc Party in The Roundhouse Main Space; Kano Presents London Town; Ghetto; Maps Ray Davies and Friends; Duke Special; Ben Westbeech; Estelle; The Flaming Lips; Sam Isaac Paul Weller with Amy Winehouse and others; Guillemots; Kasabian; The Magic Numbers; Jamiroquai; The Young Knives; Klaxons; The Good, the Bad & the Queen; James Brown with the Sugababes, Max Beesley and the London Community Gospel Choir; Jamie T; The Raconteurs; The Horrors; The View; The Zutons; Jet; The Who; Spencer McGarry Season; Friends of the Bride; Genod Droog.