Love that Alan Turing is featured on the new £50 note, but 'boo' to the fact that it's a £50 so I'll rarely get to see one.... ?
I think it should have been on the £20 or £10 instead to raise more awareness.
https://www.theguardian.com/uk-news/2021/mar/25/gchq-releases-most-difficult-puzzle-ever-in-honour-of-alan-turing