Update: Arlene Foster confirms DUP will not support Theresa May's Brexit deal

The 27 European Union leaders have endorsed the Brexit deal, European Council president Donald Tusk said.

Update - 10.55am: Arlene Foster has confirmed that her party will not support Theresa May's Brexit deal.

The DUP leader stated that if the UK parliament backs the British Prime Minister's deal, the DUP will "review" the confidence and supply arrangement.