Speaking on the election trail, the Prime Minister told supporters she would change any laws that got in the way of preventing jihadis from launching attacks in Britain.
Mrs May used one of her final speeches of the General Election campaign to step up her rhetoric against Islamist extremism in the wake of the London Bridge terror attack that left seven people dead and more than 40 injured.
She said: “As we see the threat changing, evolving becoming a more complex threat, we need to make sure that our police and security and intelligence agencies have the powers they need.
“I mean longer prison sentences for people convicted of terrorist offences. I mean making it easier for the authorities to deport foreign terrorist suspects back to their own countries.
“And I mean doing more to restrict the freedom and the movements of terrorist suspects when we have enough evidence to know they are a threat, but not enough evidence to prosecute them in full in court.