Youth League. It was also during this period that Nokwe recruited Mbeki into the SACP. In early 1962, Mbeki was accepted to study economics by correspondence at the University of London, but shortly afterwards it was arranged for him to take the degree in person at the University of Sussex near Brighton, England. Thus the ANC instructed him to join the growing cohort of cadres who were leaving South Africa to evade police attention, receive training, and establish the overt ANC structures that were now illegal inside the country. Mbeki was detained twice by the police while attempting to leave the country, first in Rustenberg, when the group he was travelling with failed to pass themselves off as a touring football team, and then in Rhodesia. He arrived at the ANC's new headquarters in Dar es Salaam, Tanzania, in November 1962, and left shortly afterwards for England. Exile and early career 1962–69: England While at Sussex, Mbeki was involved in ANC work and in broader organising for the English Anti-Apartheid Movement. Months after his arrival, his father was arrested during a Security Branch raid at Liliesleaf Farm in July 1963. During the ensuing Rivonia Trial, Mbeki appeared before the United Nations (UN) Special Committee on Apartheid and later led a student march from Brighton to London, a distance of fifty miles. At the conclusion of the trial, Govan and seven other ANC leaders, among them Nelson Mandela and Walter Sisulu, were sentenced to life imprisonment. Mbeki completed his bachelor's degree in economics in May 1965 but, at the exhortation of O. R. Tambo, enrolled for a Master's in economics and development instead of returning to Africa to join Umkhonto we Sizwe (MK), the ANC's armed wing. His Master's dissertation was in economic geography. In addition to this and his political organising, he developed a deep fondness for Yeats, Brecht, Shakespeare, and blues music.After completing his Master's, in October 1966 he moved to London to work full-time for the propaganda section of the ANC's English headquarters.He remained active in the SACP, which was very closely allied to the ANC, and in 1967 he was appointed to the editorial board of its official magazine, the African Communist. Throughout his time in England, Mbeki was the ward of O. R. Tambo and his wife Adelaide Tambo – in the absence of his parents, it was Adelaide and senior communist Michael Harmel who attended