Latest: Calls for Government to increase efforts to avoid a hard border following Barnier's warning

Latest: A disorderly Brexit would have a potentially catastrophic impact on Ireland, the Government has been warned.

Update 5.25pm: A disorderly Brexit would have a potentially catastrophic impact on Ireland, the Government has been warned.

The comments were made by Fianna Fáil's Stephen Donnelly following a speech by the EU’s chief Brexit negotiator Michel Barnier, who stated that if the UK decides to leave the customs union and single market, border checks would be unavoidable.