The Taoiseach will travel to the UK today to urge Irish people there to vote to keep Britian in the EU.

The referendum will take place there in a week.

Enda Kenny has indicated that a leave vote could mean border controls being re-established in Northern Ireland, and he warns it may have a serious impact on trade here.

Pat Leahy is the Deputy Political Editor of The Irish Times.

He says it would be a calamity if Britain were to leave;