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.
More top news
British cyclist Simon Yates has failed drug test but his team are blaming an "administrative error" over an asthma inhaler.
Two ambulances crashed leaving one driver dead and three people seriously injured.
A scandal-hit NHS trust where a teenager drowned in the bath is still failing to protect patients from risk of harm, a watchdog has found.