Update: There is no Plan B on Theresa May's Brexit deal, says Taoiseach

Theresa May has said British MPs will have to decide whether to back the draft Brexit deal and "move forward together into a brighter future" or reject it and "open the door to yet more division and uncertainty".

Update - 1.02pm: Speaking after the EU gave the green light to the agreement Leo Varadkar said there was no plan B if the deal is not approved in the British House of Commons.

The Taoiseach said: "There isn't a plan B. The truth is what we have here is the best deal that is available both for the United Kingdom and for the European Union. We have a backstop in place but we all agree that that's an insurance policy that has to be there, but would only need to be invoked under certain circumstances."