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24 programmes available now and 25 coming up. For more, try the A to Z.
Watch now (29 minutes)
Available since yesterday with 7 days left.
Newnham College, Cambridge battle St Andrews University for a place in the quarter-finals.
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Available since yesterday with 7 days left.
Jeremy Vine hosts a general knowledge quiz featuring the country's top quiz champions.
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Available since yesterday with 7 days left.
Dermot Murnaghan searches for the greatest quiz brain in Britain.
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Available since Sunday with 6 days left.
Two teams compete to develop a new product for the small animal market.
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Available since Sunday with 6 days left.
Out on Richard's secret test facility, the Lab Rats try to make a giant solar balloon.
19 more programmes available now. For more, try the A to Z.
20 more programmes coming up in the next 7 days.