Colum Eastwood is to become the first serving SDLP leader to speak at an Ulster Unionist Party conference.
The Foyle MLA will address delegates at their annual conference being held tomorrow in the Ramada Hotel at Shaw's Bridge in Belfast..
Mr Eastwood (pictured) said his appearance would be a "demonstration of what genuine cooperation looks like".
He added: "That commitment to cooperation does not mean absolute unanimity or uniformity - and nor should it.
"But it is a position of strength and it's the kind of cooperation that people want to see in our politics on issues like housing, homelessness and our health services.
"People across the North realise that Irish nationalism and unionism can never hope to seamlessly fit.
"However, our difference does not diminish our ability to pursue the commonality of our immediate cause."
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