Irish Taoiseach Enda Kenny said Margaret Thatcher was "a formidable leader" who "defined an era in British public life."
He said: "Mrs Thatcher was a formidable political leader who had a significant impact on British, European and world politics. During her 11 years as prime minister, she defined an era in British public life.
"While her period of office came at a challenging time for British-Irish relations, when the violent conflict in Northern Ireland was at its peak, Mrs Thatcher signed the Anglo-Irish Agreement which laid the foundation for improved North-South cooperation and ultimately the Good Friday Agreement.
"I extend my deepest sympathies to her family and the Prime Minister David Cameron."
More top news
Save Your Uber in London was set up after it was announced the firm would not have its licence renewed when it expires next week.
After a damp morning it will brighten up in the south and northeast but will remain cloudy in northwest England and southern Scotland.
Chinese leaders have imposed the sanctions after becoming increasingly frustrated with Kim Jong Un’s nuclear and missile tests.