It is the grand final of this seasonal competition for alumni from some of the UK's top universities - which university will be Christmas University Challenge champions?

Jeremy Paxman asks the questions.

Second semi-final in the University Challenge Christmas quiz for grown-ups.

Jeremy Paxman asks the questions.

It is the first of the semi-finals in the University Challenge Christmas quiz for grown-ups.

Jeremy Paxman asks the questions.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

It's the last first-round match, as two teams are up against each other for a place in the semis. The University of Durham team includes news presenter Tim Willcox and founder of the Eden Project Sir Tim Smith. Playing them is the LSE team, with financial whiz-kid Martin Lewis and Radio 4's Today presenter Justin Webb.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

It is the penultimate first-round match and both teams are doing battle for a place in the semis. They are the University of Aberdeen, with broadcaster Nicky Campbell and Kezia Dugdale, leader of the Scottish Labour Party, and Sheffield University, with science presenter Adam Hart and Nicci Gerrard, the thriller writer better known as Nicci French.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

In the Exeter University team are wildlife presenter Nick Baker and actor Barnaby Edwards, who plays a Dalek in Doctor Who. They fight it out for a place in the semis against Magdalen College, Oxford, featuring documentary filmmaker Louis Theroux and writer Matt Ridley.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

In the fourth match of the Christmas series, Christ's College, Cambridge, with broadcaster Natalie Haynes and news correspondent James Reynolds, fights it out against the team from the University of Essex with Antiques Roadshow expert Rupert Maas and Radio 5 Live broadcaster Dotun Adebayo. Both teams are playing for a place in the semi-finals.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

In the third match, the team from Manchester University, which features comedian Lucy Porter and The Thick of It writer Jesse Armstrong, fight it out for a place in the semis with the University of East Anglia, whose team includes Caroline Flint MP and Tim Bentinck, who plays David in The Archers.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

It's the second match of the Christmas quiz with two teams of graduates fighting it out for a place in the semi-finals.

Playing in this episode are the Oriel College, Oxford, team, which includes screenwriter Peter Harness and The Gadget Show presenter Jon Bentley, and Trinity College, Cambridge, featuring Sky News political editor Faisal Islam and food writer Bee Wilson.

Jeremy Paxman asks the questions in the Christmas-themed quiz for distinguished university alumni.

It's the opening match of the Christmas quiz for grown-ups with two teams doing battle for a place in the semi-finals. The University College London team includes writer Lynne Truss and architecture critic Tom Dyckhoff, and the University of Birmingham team features weather presenter John Hammond and news presenter Joanna Gosling.