Zimbabwe's Prime Minister Morgan Tsvangirai has been forced to cut short an event in London after he was jeered by Zimbabwean exiles.
Mr Tsvangirai urged the more than 1,000 exiles to return to Zimbabwe and help rebuild the country, but his appeal was poorly received.
Mr Tsvangirai's UK visit is the final stage of a tour of Europe and the US.
He has been seeking funding for the unity government he formed with President Robert Mugabe in February.
Mr Tsvangirai, the leader of the opposition Movement for Democratic Change who became prime minister in the power-sharing deal, said the country needed the exiles' skills and money to help to rebuild Zimbabwe.
Our mission is to make sure that we give the people of Zimbabwe hope
Morgan Tsvangirai
Prime minister, Zimbabwe
During his speech, the prime minister said: "Zimbabweans must come home."
He told the audience that improvements had been made through the creation of a "transitional" government, and that no-one had been "fooled" or co-opted.
Referring to the power-sharing deal, he went on: "It represented the best solution to a crisis that has engulfed us as a people."
Mr Tsvangirai said inflation had been cut, schools had reopened and previous scarce commodities were now available, adding that the government had "made sure that there is peace and stability in the country".
That assertion provoked a noisy reaction from sections of the audience.
