Little Baby Bum: how a UK couple built the world's fifth-biggest YouTube channel

The rise and rise of an animated nursery rhymes channel whose most popular video has been watched more times than Frozen's Let It Go

"The other day, I got an alert saying our Wheels on the Bus compilation was 63rd on YouTube's all-time chart. I had a look, and number 64 was the theme tune from Frozen."

Derek Holder, who runs the Little Baby Bum YouTube channel with his wife, sounds both amused and baffled as he tells the Guardian about its startling growth. But he's absolutely right.

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