Welsh First Minister Carwyn Jones is due to travel to Ireland today to meet the Irish Taoiseach, Leo Varadkar. They will discuss the potential negative impact of Brexit on trade between Wales and the Republic of Ireland.
Carwyn Jones said a "hard maritime border" between Wales and Ireland would be a "real threat" to both economies.
Commenting, Susan Elan Jones, MP for Clwyd South and leading supporter of Open Britain, said:
“The hard Brexit being pursued by the Westminster government will be a disaster for Wales, just as it will be a disaster for the rest of the UK.
“In Wales, barrier-free trade is critical for the health of our economy. Anything that adds friction to this trade will mean queues at the border, backlogs and a bureaucracy bombshell for businesses.
“Crashing out of the Customs Union and the Single Market therefore poses an enormous threat to the economy of Wales. Why are we trying to re-invent the wheel, when we know that doing so will introduce more friction to our trade and hurt businesses and jobs?”