How can I pay an Italian bill which is asking for my bank account details? Can I transfer from my UK account in GBP to Euros in my Monzo first?
You’ll have to use the TransferWise service;
Edit: you may have to use TransferWise directly (not through the Monzo app) if you’re sending a specific Euro amount. The topic below has information on a shortcoming of using TW through Monzo;