>> This is the only land border between the UK and the EU, separating Northern Ireland and the Republic of Ireland. It's now largely unmonitored and governments on both sides want it to stay that way after Brexit, but there's no arrangements on how that might be done. And locals are fearing a return of border controls.
>> The whole idea of the EU was to bring down borders. And now we're back into a situation where there's going to be a border right across the island of Ireland. It's madness.>> Mc Namee's Bakery have operated in Crossmaglen in the North since 1939, but also have shops across the border in the Republic.
They send goods and earnings back and forth and employ staff from the EU, many of whom commute from the South.>> If they put in anything that looks like a hard border, it's gonna add complications, it's gonna add costs, and that cost is gonna have to be passed on to somebody.
>> InterTradeIreland works with governments on both sides of the border to help businesses like Mc Namees prepare for Brexit. And the potential aversion to road trade organization tariffs and a hard border. They estimate that worst case scenario could cut cross border trade by 8%. Even global companies like Guinness are threatened.
They ship their beer to Belfast to be canned and bottled, then back to Dublin for distribution.>> Everything is a threat for us. It's not just our director trade with the United Kingdom. It's not just the border in Northern Ireland. It's the rooting of our trade. A lot of our trade goes through what we call the land bridge in the UK.
>> The British government saying Thursday that more work is needed before there is any deal. But Dublin has hinted it could hold up Brexit talks if there's no guarantee of an open border. The people and business of Cosmiglan can only wait and hope.