Ed Miliband MP, Leader of the Labour Party, said:
"The world has lost the inspirational figure of our age.
"Nelson Mandela taught people across the globe the true meaning of courage, strength, hope and reconciliation.
"From campaigner to prisoner to President to global hero, Nelson Mandela will always be remembered for his dignity, integrity and his values of equality and justice.
"He was an activist who became President and a President who always remained an activist. Right to the end of his life he reminded the richest nations of the world of their responsibilities to the poorest.
"Above all, he showed us the power of people, in the cause of justice, to overcome the mightiest obstacles.
"He moved the world and the world will miss him deeply.
"During the struggle against apartheid, the Labour party was proud to stand with the people of South Africa in solidarity. Today we stand with the people of South Africa in mourning.
Read the Prime Minister's statement here