Celebregion

         The life of south africa's first black president and african icon Nelson Mandela will be the subject of a six-hour mini-series, titled Madiba .             Madiba  is to be the subject of a $20m (£13m) TV mini-series spanning six decades and the momentous events leading to his election as South  Africa 's first black president after 27 years in jail. Mandela, now 93, has given his approval for the six-hour  drama , which is due to go into production later this year, shooting primarily on location in  South Africa .    Madiba is being written by Nigel Williams, the British novelist, screenwriter and playwright, whose previous TV credits include an adaptation of his own novel The Wimbledon Poisoner and Elizabeth I, starring Helen Mirren.     The mini-series is being co-produced by his grandson, Kweku Mandela, UK film-makers  Andy Harries and Marigo Kehoe through their production company, Left Bank Pictures.        Kweku Mandela said Madiba would not just be another