I'm curious about other countries now because I never really gave that a thought. I was surprised though when I was in China for the first time and learned the largest one is 100rmb which was around 10€ at that point. It's now more like 15€ and China is rapidly changing to a completely cashless society anyways but it was really weird back then; since using the ATM included a fee, you would get like 4000 bucks at once (depending on how long you stayed) and run around with 40 bills in your pocket.
In the U.K. it’s almost at the point of being cashless - indeed I ate at a restaurant on Saturday night which didn’t accept cash.
In Germany it’s like going back to the UK in the early 90s in that regard. Charges to withdraw money from ATMs, the newly built canteen at the office of a large experiment doesn’t accept card, but also wouldn’t take a €50, which was also what the ATM gave me!
It's frustrating.
(Paying a fixed amount to the bank was a thing in Germany like 10 or 20 years ago.)
Can't be said enough, cash is king in Germany. Go north or east (Poland not so much but Lithuania+) and cash is only useful for tips.
In a part of London with many tourists, I saw them used by people ahead of me in the queue daily. There are some cash machines somewhere in London that dispense them -- possibly in Canary Wharf, I forget.
Conversely, I don't think I've seen a cash machine with fivers.
https://imgur.com/a/sJu9y (cash machine showing it has £20s and £50s).