Greg Jenner

Good, serious concerns, I think.

This for a perfect 10 out of 10.

In what year was the telephone system nationalised in Britain?

It's amazing.

Trauma learning.

Amazing, Catherine.

Well done.

And thank you so much, Professor Yuan.

That was a lovely history lesson there.

I think we all learned plenty about the telephone.

And listener, if you want more from Catherine, of course, she's done many episodes with us, including a fan favourite, Gráinne O'Malley, Irish Pirate Queen.

And of course, the history of general elections, which was very interesting too.

For more electrical history from Professor Yuan, there's our episode on vital electricity with Olga Koch that was surprisingly violent.

Quite a lot of sort of electricity torture and people being shocked horribly.

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And if you're outside the UK, you can listen at bbc.com or wherever you get your podcasts.

I'd just like to say a huge thank you to our guests in History Corner.

We had the incredible Professor Yuan Morris from the University of Aberystwyth.

Thank you, Yuan.