Shoe thrown at China's premier during Cambridge speech
The protester was sitting at the back of a crowded auditorium as Wen was speaking on the global economy.
The man threw the shoe after standing and shouting: "How can this university prostitute itself with this dictator here? How can you listen to the lies he's telling without saying anything?"
The shoe missed Wen by about a metre, according to witnesses at the event. The protester, whose identity was not yet released, was restrained by university security guards.
Cambridgeshire police spokeswoman Shelly Spratt said a man was arrested on suspicion of a public order offence and was taken to a local police station for questioning.
The incident comes just two months after an Iraqi journalist threw his shoes at then U.S. president George W. Bush at the beginning of a news conference during his last visit to Iraq.
TV journalist Muntadhar al-Zaidi, 29, has been hailed as a hero in the Arab world, where throwing one's shoe is considered a severe insult.
He has been detained since the December incident and could be imprisoned for 15 years if convicted on charges of insulting a foreign leader.
Al-Zaidi's family has alleged he has been severely tortured while in detention, a claim strongly denied by the Iraqi government.
With files from the Associated Press