University Challenge viewers have been left stumped by a string of tricky questions that even left Britain's sharpest university teams admitting defeat. Hosted by Amol Rajan, the hit BBC series has ...

It's the final match in round one of the quiz for teams of university students. The University of York face Northeastern University - London for a place in round two. Amol Rajan asks the questions.

In another first-round match, two University of London colleges - the London Institute in Paris and Goldsmiths - do battle for a place in the second round. Jeremy Paxman asks the questions.