Tsvangirai has also visited United States of America where President Barrack Obama also pledged support for the country.

Brown announced four million pounds of food aid and one million pounds for school textbooks, bringing total British "transitional support" for the Zimbabwean government this year to 60 million pounds.

"We are prepared to go further in offering more transitional support if the reform programme on the ground gains momentum," Brown said.

The Zimbabwe PM was quoted recently as saying that the southern African country needs about $ 10 billion to rebuild its economy.

A Reuters report said the extra British money will be channelled through the World Food Programme and charities.

Tsvangirai and President Robert Mugabe entered into a government of national unity after months of disagreements.

The national unity government has been seen by many as the only way for the country to put its economy back in shape.

Many Zimbabweans have left the country in search for greener pastures and Tsvangirai is reported to have been jeered when he called Zimbabweans living in UK to return back to the country.

Apart from the economic problem, Zimbabwe has also been affected by the cholera outbreak which has killed about 4,000 people.