The government does not currently have control of Britain's borders, the home secretary will admit in a speech today.

Shabana Mahmood is hosting counterparts from the Western Balkans and other European allies in London, and will demand greater international co-operation to tackle small boat crossings.

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The summit is designed to ensure nations on the continent strike new deals to tackle illegal migration, following Britain's "one in, one out" agreement with France signed earlier this year .

Calling for a "joined-up" response to the challenge, Ms Mahmood will say "coming together as we are today […] will make all of our borders and our countries stronger".

In the meantime, however, the government has failed "to bring order to our borders".

"The ci

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