2. Crossworders v Birkbeck Alumni

Three crossword enthusiasts pits their wits against a team of alumni from Birkbeck College, London.

3. County Councillors v Ombudsmen

A team of county councillors from Wales take on three local government ombudsmen from England.

4. Science Writers v Travel Writers

Three popular science writers face a team of travel writers.

5. Edinburgh Scrabblers v Solent Scrabblers

Teams of scrabble enthusiasts from Scotland and the south of England take on each other.

6. Urban Cyclists v Country Walkers

Three London-based cycling friends pit their wits against a team of Welsh ramblers.

7. Bankers v Bookkeepers

Three bankers take on a team made up of a librarian, a researcher, and a tax advisor.

8. Cricket Supporters v IT Support

Two teams of supporters of some form, face off against each other.

9. County Councillors v Science Writers

In the first quarter-final, returning teams of county councillors and popular science writers face each other.

10. Crossworders v Edinburgh Scrabblers

Quarter-final.

11. Bankers v IT Supporters

Quarter-final.

12. Lapsed Psychologists v Country Walkers

Quarter-final.

13. Crossworders v Science Writers

Semi-final.

14. Bankers v Lapsed Psychologists

Semi-final.

15. Crossworders v Lapsed Psychologists

Final.