A memorial stone will be laid in Westminster Abbey for the late South African President Nelson Mandela.
Prince Harry will join almost 2,000 people for a memorial service to commemorate the late leader's life and work at the abbey.
Prime Minister David Cameron, deputy president of the Republic of South Africa, Kgalema Motlanthe, and Archbishop Emeritus of Cape Town, the Most Reverend Desmond Tutu will all be among the congregation.
Mr Mandela, who died on December 5 last year, was welcomed to the abbey in July 1996 when, during a state visit, he laid a wreath at the Grave of the Unknown Warrior.
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Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.
This week daytime temperatures reached 19C. Next week we are expecting 13C by day and close to freezing at night.