Northern Ireland rejected the idea of leaving the Brussels bloc in June’s referendum with a majority of 55.8 per cent voting to Remain.
Sinn Fein's Michelle O'Neill said the Brexit issue had now brought Irish reunification “firmly back on to the political agenda” during her party’s Easter Rising commemoration on Sunday.
Northern Ireland voters spoke out against Brexit during a 30-minute documentary
I think the impact of Brexit hasn’t even been thought about in mainland UK
Northern Ireland voter
Such remarks were echoed in the 30-minute documentary aired on Monday – with one resident scolding Theresa May for forging ahead with a clean break from the Brussels project.
The unnamed woman said: “I think the impact of Brexit hasn’t even been thought about in mainland UK.
“[Reunification] is something I would support and I do think we’ll be better off, particularly given the level of growth in Ireland’s economy right now.
“My opinion of it all is that in Westminster they don’t really have any regard for us, they don’t seem to be considering the impact, so I think it would be better.”
One resident said Northern Ireland would be 'better off' breaking from the UK
The prime minister has promised not to “turn back the clock” on Irish relations, vowing to keep the border between the North and Republic of Ireland open.
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However, another woman interviewed believed the Brexit decision was enough to spark a new vote on the country breaking away from the UK.
She said: “Northern Ireland’s position should be reconsidered, there’s also the hard border to take into consideration, it’s going to affect a lot of people.
“I think there should be another referendum because most people from here agreed to stay, that’s all I have to say.”
Sinn Fein's Michelle O'Neill said Brexit brought into question Irish reunification
A poll released last month found residents in the North were evenly divided on how they would vote if given the option of a united Ireland.
A survey of 1,200 adults showed 33.1 per cent were in favour if it meant their government paying an estimated €9bn a year to cover British budget accounts.
Meanwhile, 32.5 per cent said they would vote against and 34.4 per cent undecided.
Speaking on Sunday, Ms O’Neill, Sinn Fein’s leader, said the North must now be given a say on their future relationship was the UK.
She said: ”The people of the North clearly voted to see their future in the European Union in the referendum last June.
“Those who voted Remain came from all walks of life. They were nationalists, unionists, republicans and others.
Brexit Negotiations: Britain's sternest enemies Tue, April 4, 2017
According to a new index, the EU27 countries fall into three groups: hard-core, hard and soft. These are the countries with the highest scores which indicate a fairly strong opposition to Britain’s position
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France has the highest score in the index at 32.5
"They did so not because the EU is such a great institution, but because it is in their best interests politically, socially and economically and because they did not want to see any strengthening of the border in Ireland.
"The British government's reckless Brexit agenda offers nothing to the people of the north who are being dragged out against our will.”