Matt Parker is a stand-up mathematician, author, and YouTuber. His book Humble Pi was the first maths book in the UK to reach No.1 on the Sunday Times bestseller list. Matt’s YouTube videos have been viewed over 10^7 times and he has a very similar number of subscribers to Steve Mould. Don’t look that up, just trust me. Would a #1-best-seller lie to you? No. Good. Ah… Matt also had a sell-out maths comedy show at the Edinburgh Fringe and once held world records for both the Rubik’s Cube and Space Invaders.