Prosecutors said Xolile Mngeni was hired by Mrs Dewani's British husband Shrien Dewani to carry out the killing, which was made to look like a car hijacking in Cape Town's impoverished Gugulethu township during the couple's honeymoon.
Following her death three men have been convicted. Anni's husband Shrien Dewani is fighting extradition to South Africa and continues to deny he orchestrated the killing. The convictions to date are:
December 2010: Taxi driver Zola Tongo is jailed for 18 years after making a plea agreement with prosecutors.
August 2012: Mziwamadoda Qwabe is jailed for 25 years after admitting murder.
November 2012: Xolile Mngeni is found guilty of killing Mrs Dewani.
More top news
The video, obtained by ITV News, shows scores of migrants desperately trying to board lorries in a restricted area within the tunnel.
Ex-Spitfire pilot Allan Scott, 94, said he was told off by the Queen when he first met her in 1943 when she was just 16.
Last minute preparations are going on at the Church of St Mary Magdalene where Princess Charlotte will be christened.