I want to know something regarding the same ATM, If the limits are 1500 GBP per phone/day and I exceed them, they will ask me for the verification process after I pay them or before? I mean what happens If someone don't have his documents with him and they ask him after his send the bitcoins, that would be kinda unfair to not tell him until he send..
I think that'd be known to you before doing the transaction. It usually shows you the limit you have before you chose sell or buy.
Let me know if you saw something else, but that should be the expected behaviour