Just looking at who was the youngest at the time of their first appearance:

• 21 - Jack Whitehall
• 23 - Kevin Bridges, Seann Walsh
• 25 - Maisie Adam, Rhys James
• 26 - Russell Howard, Mark Watson, Olga Koch, Ivo Graham, Nathan Caton, Chris Ramsey
• 27 - Rob Beckett
• 28 - John Oliver, Sarah Keyworth, Glenn Moore, Larry Dean, Nigel Ng, Carl Donnelly
• 29 - Josh Widdicombe, Sophie Duker, London Hughes, James Acaster, Katherine Ryan, Lauren Laverne

Unlikely reasons to interrupt your regularly scheduled program.

Points for #1701 ongoing.

Let's see who tops the list

Today’s topic is Transport

And the answer is: for life

What is the question?

Unlikely things to hear on an episode of Grand designs.

Points for #1700 ongoing.

Things the king would never say on a royal tour.

Points for #1699 ongoing

Unlikely things for a politician to say in a press conference.

Points for #1698 ongoing.

Today’s topic is The Internet

And the answer is: £50 million

What is the question?

Unlikely lines from a Vampire movie

Points for #1697 ongoing.

Today’s topic is Music

And the answer is: 8 months

What is the question?

Unlikely things to hear during a eulogy

Points for #1696 ongoing.

Things you wouldn't hear in a disaster movie

Points for #1695 ongoing.