The First ministers in the North, Wales and Scotland say 'Westminster's time is coming to an end'.

Leaders of Sinn Fein, the Scottish National Party and Plaid Cymru in Wales met in Cardiff on Monday to discuss independence from the United Kingdom.

For the first time since devolution began, all three nations have first ministers who want to leave the United Kingdom.

However, today's conference was scheduled before the US President Donald Trump's comments about a united Ireland during his visit to Dublin and Clare over the weekend.

The British Prime Minister Andy Burnham has signalled any vote on independence is "off limits".

Sinn Féin president Mary Lou McDonald (centre) and vice-president Michelle O'Neill at Stormont in Belfast as powersharing in the North is set to return. Photo: PA

Both Vice President of Sinn Féin, Michelle O'Neill and the party's president Mary Lou McDonald took part in today's meeting in Cardiff.

Northern Ireland First Minister, Michelle O'Neill, said the people of Northern Ireland, Wales and Scotland should be given the opportunity to decide their own future.

"We're coming together because we all want to break free of the shackles of Westminster.

"We're coming together at a moment of hope and opportunity for all of our people.

"What we want is self-determination. What we want is to be able to decide our own future and to bring that into the hands of our people. So these are big moments of change, big moments of hope".

However, the North's Deputy First Minister, the DUP's Emma Little Pengelly has accused republicanism of attempting to weaponise the role of First Minister.

During Monday's meeting the leaders of Sinn Fein, the Scottish National Party and Plaid Cymru agree new memorandum of understanding to strengthen cooperation between the three parties.

The leaders also agreed that the "political landscape across these islands is changing".

"For the first time ever, people across these islands have First Ministers in Scotland, in Wales and in the North of Ireland who are all committed to independence from the United Kingdom. For people watching across these islands - for people watching around the world - there could be no clearer sign that Westminster’s time is coming to an end.

"We share a belief that the nations and communities we represent deserve greater ambition, greater economic opportunity and a stronger voice in determining their own futures".

In a joint statement, the three political parties also committed to working together on "practical areas of shared interest, including renewable energy, building stronger and fairer economies, strengthening relationships with Europe, and supporting the right of each nation to determine its own future".