I think someone mentioned it already, but basically I want to have more than one account. One where I receive my salary and pay my rent and bills, and other where I transfer the money to actually spend with the card.
Two reasons for this:
Every time I move prospective landlords want to see my rent payment. However, I do not think it is appropriate for them (or for the matter, another bank - because you want to open a branch account, business account, or similar) to see what I spend my money on. I consider that to be private.
Monzo is really good at showing information about transactions (whether chip&pin or contactless) straight away. This allows me to know what I spend my money on better.