The home secretary has secured a deal extending Britain's borders to the Eurostar terminal in Belgium.

The move will give immigration officers full powers in the country, allowing them to refuse entry to the Eurostar to any passengers with false or stolen travel documents, preventing them from travelling to the UK and claiming asylum.

Such an agreement has existed with France since 2001, which has reduced asylum applications at London Waterloo station by more than 90 per cent.

In the last year alone 9,000 people have been stopped at the three French Eurostar terminals.