Serving prisoner Steven Gallant took on Usman Khan as he embarked on a killing spree armed with two knives and wearing a fake suicide vest on November 29.
The PM also lashed out at possible successor Boris Johnson.
Guto Harri says 'sexually incontinent' Boris dug his 'political grave' with suicide vest jibe
As Theresa May warned 80 Tory MPs will vote against her Brexit plan.
An unholy mess? You bet it is.
'Comparing the PM to that isn't funny.'