Any UK films / TV where Americans use flawless UK accents?

[SticksAndString]

@The_Other_Waldo_Pepper

For what it’s worth, Davis was also in The Prestige – which arguably fits the OP’s “films” criteria – as the proper British judge dealing with Michael Caine at the outset.

Speaking of Micheal Caine..I have to say I loved him in Secondhand Lions. He NAILED the west Texas accent, to my native Texan ears anyway.