If you fell in love with Charlie when he was leading the gang Sons of Anarchy or fighting monsters in Pacific Rim, you'd be forgiven for thinking he was born and raised in the USA. However, before he hit screens in the US, he'd already made waves over here starring in projects like Queer as Folk, Nicholas Nickleby, and the dystopian thriller Children of Men, so chances are he was on your radar long before that.
However, though Charlie's US accent seems to have been enough to fool plenty of people, ironically he's struggled a little more adopting different dialects from his own country. Charlie grew up in Newcastle, and when he tried to tackle a Cockney accent for the movie Green Street, he struggled so much he eventually ended up on a list of the worst Cockney accents ever. Perhaps it's no surprise he now chooses to work more on the other side of the Pond.