The UK will no longer tolerate Islamist extremists who “reject our values”, Home Secretary Theresa May has said.

In a speech at the Royal Institute of Chartered Surveyors in London, May said that everyone in Britain had “responsibilities as well as rights”, and must respect laws and institutions, and that individuals and communities need to work together to rout out extremism.

The Home Secretary described the threat posed by extremists to the UK, saying:

“Islamist extremists believe in a clash of civilisations. They promote a fundamental incompatibility between Islamic and Western values, an inevitable divide between ‘them and us’. They demand a caliphate, or a new Islamic state, governed by a harsh interpretation of Shari’a law.

They utterly reject British and Western values, including democracy, the rule of law, and equality between citizens, regardless of their gender, ethnicity, religion or sexuality. They believe that it’s impossible to be a good Muslim and a good British citizen. And they dismiss anybody who disagrees with them – including other Muslims – as ‘kafirs’, or non-believers.”

May went on to set out a number of proposals to manage the threat of extremism in the UK, including banning hate preachers, and closure orders to shut down premises owned or used by extremists.

She also proposed a review of supplementary schools to “protect children from extremists” and the introduction of ‘extremism officers’ in prisons to tackle the extremist indoctrination of those behind bars.