P20e CEEFAX 205 Sat 1 Apr 00:05/01     \    Mrs Thatcher has said that bringing justice and freedom to all of southern Africa is one of the world's most pressing tasks. Speaking i Malawi near the end of her African tour, she said it was "a time of new hope for southern Africa". She said there was a growing acceptance in South Africa that discrimination based on race and colour must and will end, and that black South Africans should play their part in politics. Mrs Thatcher earlier announced an extra £10 million in aid for Malawi. PM lby visit Namibia 104/204 Next News NewsIndex Newsflash BBC2 TV