Measures to tackle broadcasters of extremist material are included in the Queen's Speech.

The Government will strengthen watchdog Ofcom so that it can take action against channels that transmit extremist content.

Last week a leaked letter emerged in which then culture secretary Sajid Javid set out his opposition to any move to vet television programmes for extremist content before they air.

The Extremism Bill will also include: ::The introduction of banning orders for extremist organisations who use hate speech in public places, but whose activities fall short of proscription.

::A new power to allow police and local authorities to close down premises used to support extremism.

::Enabling employers to check whether an individual is an extremist and barring them from working with children.

Earlier this month David Cameron revealed that the Government plans to fast-track the package as he called on Britain to confront "head-on the poisonous Islamist extremist ideology".