The ceremony will take place on September 2 in London
James Blake and Neutral Milk Hotel were due to headline two-day event at Excel Centre
31-year-old Lisa Williamson died in hospital on August 9
Pre-sales for live dates start tomorrow (August 13)
Much loved actor was found dead at home yesterday, aged 63
Ceremony to take place on February 18 2015 at O2 Academy Brixton
31-year-old female was found unconscious in toilet on Saturday (August 9)
Plus, new albums from A Sunny Day In Glasgow, Falty DL and Porter Robinson