The singer was due to DJ on Saturday (June 25)
Allen was "left terrified for my and my children's safety"
Ora had posted a tribute to the late music icon, calling him a "dear kind friend"
'Minority Report' and 'Control' actress also criticises the police
Singer goes on the offensive after receiving an email from the Met
Allen's stalker managed to enter her bedroom last October and has now been convicted
Pop star is leading anti-Cameron protests following Panama Papers leak
Singer also vows to take her fight to Number 10
Singer named her last album 'Sheezus'
The pop singer responded to an article about the lack of diversity in the awards nominations