Cees, thank for confirming that the U.K. Blu-ray isn't region-locked. I wasn't able to determine that from the Amazon.uk listing. I'll amend the review accordingly.
If no one had told you, you wouldn't know the difference. "I Can't Change It" works beautifully in context; in some ways, the lyrics are better suited, but I can't say why without spoilers. John Simm even says something on the commentary track about how much he likes the music for the scene...