Prime Minister Theresa May has vowed next week’s Brexit parliamentary vote would “definitely” go ahead, as she promised new safeguards for Northern Ireland and to look at giving MPs more say in shaping future EU negotiations.

The UK’s March exit was “in danger” if MPs did not back her Brexit deal, she said.

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Barclays’ former chief executive, John Varley, is one of four defendants whose trial begins this week.

They face charges over the bank’s emergency refinancing arrangements with Qatar in 2008, as the bank struggled to avoid the fate of other high-street rivals bailed out by the UK taxpayer.