Hello fellow USian
In the rest of the world, centre is used as center. To further confuse you, many folks take the two spellings as separate meanings. Center is treated as the word for a place or institution and centre is considered as the word for the middle point of something.
...boots, bonnets, bog rolls, flats.
...and the lizard people at the center of the Earth? Most Reg readers are familiar with the concept and are simply waiting to see who rules us in the end; The lizard people or the robot overlords.
My money's on robotic lizard people.