Migrants will be barred from entering Britain after a Brexit unless they can speak good English and have the right skills for a job, Boris Johnson and Michael Gove have pledged as they set out their vision for the UK outside of the EU.

In a joint declaration, Mr Johnson and Mr Gove announce plans for an Australian-style points based immigration system to come into force in the years after Britain leaves the EU.

Their statement, which is also signed by employment minister Priti Patel, will infuriate Downing Street and represents a major challenge to David Cameron’s authority.