In an early line in the film, Colin Firth's character refers to Mathieu played by Jim Carter as his "clark". This is the English way of pronouncing the word clerk. This line can be found in both the US and European version. However, later in the film, the character refers to himself in the US version as his clerk, and in the European version as his "clark.'
In the epilogue crawl, the character name Mathieu is spelled once correctly, and in a subsequent paragraph as Mathiew.