From the video description:

"The British Library is one of the six legal deposit libraries for the UK — and the only one that doesn’t pick and choose, or have to ask for copies. That’s a lot of books to store, and the internet’s only making it worse. ■ The BL: https://bl.uk ■ UK Web Archive: https://www.webarchive.org.uk/

This video has a correction: it turns out the formal interview requirement for a reader pass has been dropped. However, you’ll still need to get a pass, and you’re not allowed to take books out of the reading rooms! You can see all corrections on the channel here: https://www.tomscott.com/corrections/
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