It’s the second of the semi-finals in the University Challenge quiz for grown-ups.

It’s the first of the semi-finals in the University Challenge quiz for grown-ups.

Jeremy Paxman asks the questions in the last first-round match of this Christmas series.

Jeremy Paxman asks the questions in the penultimate match of the first round.

It's match five of this special Christmas series for distinguished alumni.

Jeremy Paxman asks the questions in the fourth match of the Christmas series.

Jeremy Paxman asks the questions in the third match of the Christmas series.

Jeremy Paxman asks the questions in the second match of the Christmas series.

Jeremy Paxman asks the questions in the opening match of the Christmas series.

Jeremy Paxman asks the questions in another second round match.

The second round of the quiz for students continues.

Jeremy Paxman asks the questions in another second-round match.

Two more student teams fight it out to get through to the quarter-final stage.

Jeremy Paxman asks the questions as the second round continues.

Jeremy Paxman asks the questions in another second-round match.

Jeremy Paxman asks the questions in the first of the second-round matches.

Jeremy Paxman asks the questions in the last of the two highest-scoring loser matches.

Jeremy Paxman asks the questions in the first of the two highest-scoring loser matches.

Students from Magdalene College, Cambridge, face University College, Oxford.

The University of Edinburgh clashes with the University of Manchester.

The University of Warwick and Wolfson College, Oxford, compete for a place in round two.

The Royal Academy of Music faces the team from St John’s College, Cambridge.

In another first-round match, Merton College, Oxford, plays Wolfson College, Cambridge.

Students from the University of York fight it out against King’s College, London.

Darwin College, Cambridge, takes on the University of St Andrews.