Aidan Flynn: Contrary to some commentary, trade at ports in North has risen with new Irish Sea border

Volumes on the Britain-Northern Ireland routes have increased 5% from a year ago with some northern hauliers choosing the  Cairnryan-Larne connection rather than using Dublin Port

Aidan Flynn, general manager of the Freight Transport Association Ireland.

The consequences of the UK leaving the EU customs union and the single market for the island of Ireland have never been far from the headlines since 11pm on the last day of December. 

Trade barriers, non-tariff barriers, rules of origin issues, and barriers for the movement of products of animal origin have all increased and pushed up the cost of doing business between the UK and the EU.