To celebrate the occasion, we're looking back at some of the performers who have taken part in the popular contest over the years, and their supporters in the crowd.
These photos, taken by Bill Foote, show some of the bands who have graced the stages at the Drill Hall or the Carfax Bandstand from 2003 to 2009.
13.
The debut performance of Rocky Dyson & The Cyclones at Horsham's Battle of the Bands in 2007 Photo: Bill Foote
14.
David Thompson and his band playing in 2007 Photo: Bill Foote
15.
Battle of the Bands 2007. Lee Martin of Dogs In Space Photo: Bill Foote
16.
Ollie Barron of Shoot More Holes performing in 2007 Photo: Bill Foote