Gordon Brown has said sanctions against Zimbabwe should not be lifted until concerns about human rights violations and media restrictions are addressed.
After talks with South African President Jacob Zuma, Mr Brown said Zimbabwe must show progress in key areas including democratic reforms.
President Zuma, on a state visit to the UK, has suggested sanctions should be eased to help Zimbabwe “move forward”.
News Agency reporter said the two effectively disagreed over the issue.
After talks in London, the two leaders sought to present a united front on Zimbabwe, with the prime minister praising South Africa’s role in helping bring “stability and change” to its neighbour.
But our correspondent says differences remain and Mr Zuma had made it clear that if lasting change did not happen in Zimbabwe, some people could use international sanctions as an excuse.
SOURCED FROM BBC