11 June 1988
On 11 June 1988, the British Anti-Apartheid Movement (BAAM) held an 11-hour rock concert at Wembley Stadium in London to pay tribute to Nelson Mandela on his 70th birthday on 18 July. Peter Gabriel delivered his anti-apartheid anthem Biko. Whitney Houston, Phil Collins, Miriam Makeba, Hugh Masekela, Simple Minds, Eurythmics and Dire Straits also performed. 72,000  people went to the concert and it was broadcast live on BBC-2 to sixty different countries with an estimated audience of a billion people. Nelson Mandela has continued raising money and awareness through his 46664 concerts
References

Elman P. Nelson Mandela 70th Birthday Tribute from Hollingsworth [online] Available at: https://tonyhollingsworth.com [Accessed on 10 June 2013] |

IMBD Freedomfest: Nelson Mandela's 70th Birthday Celebratation (TV 1988) [online] Available at: https://www.imdb.com [Accessed on 10 June 2013]