Latest: Government's clash over border issue; Taoiseach suggests Brexit not thought through

Latest: The Taoiseach has suggested the British government hasn't thought Brexit through.

Update 2.30pm: The Taoiseach has suggested the British government hasn't thought Brexit through.

Ahead of his talks with Mrs May, Mr Varadkar said: "It's 18 months since the referendum, it's 10 years since people who wanted a referendum started agitating for one.