Michael Buerk is to step down as the anchorman of BBC News at Ten O'Clock, 20 years after reading his first bulletin, the corporation confirmed last night. Mr Buerk, who is 56, has told the management that he wants to leave in the near future but will continue with other radio and television projects. He is currently the presenter of Radio 4's Moral Maze and The Choice, which looks into life-changing decisions made by individuals. Mr Buerk joined the corporation in 1970. He has won numerous awards for his reporting but is best known for his coverage of the Ethiopian famine of 1984.