Tutu poses with his Nobel Peace Prize along with Chairperson of the Nobel committee Egil Aarvik, 10 December 1984, in Oslo. Picture: AFP

Tutu received the Martin Luther King Jr Award for Non-Violence on 19 January 1986. Picture: AFP

Archbishop Desmond Tutu casts his vote on 27 April 1994 in Gugulethu, Cape Town, in South Africa's first democratic elections. Picture: AFP

21 August 1996.Former president FW de Klerk hands over the NP's submission to Tutu, head of the TRC, in Cape Town. Picture: AFP

Archbishop Emeritus Desmond Tutu and his wife Nomalizo Leah Shenxane. Picture: Chanel September/EWN

South African former President Nelson Mandela holds the Jules Rimet World cup beside Desmond Tutu, 15 May 2004. AFP

Archbishop Emeritus Desmond Tutu celebrated his 87th birthday on 7 October 2018. Picture: @TutuLegacy/Twitter

FILE: Archbishop Emeritus Desmond Tutu attends the 9th Desmond Tutu International Peace Lecture on his 88th birthday. AFP

Emeritus Archbishop Tutu gets COVID-19 vaccine at Brooklyn Chest Hospital in Milnerton. Pic: Western Cape Government

Tutu and his daughter Canon were awarded honorary fellowships by Regent's University London in Cape Town in 2016. Picture: Aletta Harrison

Tutu welcomes the Dalai Lama prior to the international peace conference in Hiroshima, 2 November 2006. Picture: AFP

Britain's Queen Elizabeth II welcomes Archbishop Desmond Tutu at Buckingham Palace on 20 November 2013. Picture: AFP

Tutu and former US president Obama following a tour of the Desmond Tutu HIV Foundation Youth Centre in Cape Town in 2013. Picture: AFP