China Pledges Eurozone Support
Mr Wen flew into Birmingham airport on Saturday night, and was met by Trade Minister Stephen Green and Britain's ambassador to Beijing Sebastian Wood, the Foreign Office said.
He had come from Hungary, where he was asked about the debt crisis in Europe, and especially the situation in Greece.
"China will consistently support Europe and the euro," Mr Wen said.
He said he was confident the eurozone could overcome its problems.
"Europe's debt crisis is expanding. Trust is more important than currency and gold and now, during the debt crisis, we again bring trust to Europe.
"I have total trust in Europe's economic development," he added.
China has foreign reserves of about $3tn and is believed to be diversifying some of its holdings from US dollars into euros and other currencies.