Police Federation Chairman Paul McKeever will tell Theresa May today:
"Home Secretary, we warned you about the riots and you said we were scaremongering.
"We warned you that a 20% budget cut would damage the front line and were told we were wrong.
"We are warning you that you are racing towards a train crash that could destroy the effectiveness of policing in this country and harm the safety of the public.
"Home Secretary - take breath. Stop now, and review what you’re doing or you will be found guilty of destroying the finest police service in the world."
Home Secretary Theresa May was heckled and booed by police officers calling for her to resign at the Police Federation conference.
The Home Secretary was heckled as she said changes to pay and conditions should be welcomed by hard-working police officers.