He will also launch Ireland's bid for the 2023 Rugby World Cup
The Taoiseach Leo Varadkar travels to London to meet the British Prime Minister Theresa May today.
He will also be part of Ireland's final push in the bid to win the Rugby World Cup 2023.
The first stop for Mr Varadkar is an upmarket hotel in Kensington, where the Ireland 2023 team has its final pitch for the tournament.
This is the same hotel where the winner will be unveiled on November 15th next.
He will be joined by Irish legend Brian O'Driscoll, Ireland captain Niamh Briggs, bid chairman Dick Spring, Sports Minister Shane Ross and Philip Browne of the IRFU.
Mr Varadkar will then go to Downing Street for a lunchtime meeting with Theresa May.
The agenda includes the stalemate in Northern Ireland and Mrs May's Brexit sepech in Florence last week.
Although the Taoiseach will cautiously welcome the speech, he will continue to raise concerns that the British government has not set out a clear solution to the border.