Character mistake: Ash Morgan tells the grifters that "Anxious" has a basement flat in Camden, and he sends Sean there to get phoney identity papers. It is quite clear that the flat is on the ground floor, not in a basement. The front door opens onto the street.
Plot hole: During their assessment of the security in operation at the Syrian bank they intend to rob, Mickey and his team discuss in some detail the regular patrols of the safety deposit box vaults by guards leading attack dogs. These guards are conveniently forgotten about during the heist, even though there has been a power failure knocking out all but one of their electronic safeguards. You'd think there would be increased and more thorough patrols by the guards at that time - instead they just disappear.
Suggested correction: Watch the episode again. The guards are shown patrolling, but Mickey and his gang are behind a huge, locked vault door and the guards do not have access. One guard is shown looking at the door and is satisfied it is closed and secure. The guards have every reason to believe that the pressure pads inside the vault provide sufficient security during the power cut as they are not affected.
