I was a huge Monzo fan, converted dozens of friends to it and was one of the first ones to get their beta current account (which I immediately started using as my main and only account despite it being in beta).
Nowadays however they seem to have trouble making profit, but instead of focusing on their existing customers they pour money into more marketing even though they can’t actually support all of them and now customer service response times are measured in days. They feel like a bullshit social media company with no real (aka profitable where people are happy to pay for it) product and are just trying to inflate their customer numbers no matter what.
Now I bank with Starling. They aren’t as “nice” as Monzo used to be but are definitely a lot better than the current Monzo both in terms of support and UI (Monzo redesigned their UI and it’s a shit-show now). They also offer business and Euro accounts if needed.