Considering how often pop stars lip sync, I give her KUDOS for at least giving a live vocal. Yes, it's not 100% perfect, but singing and dancing together is not always easy (granted, she's not doing too much dancing here).
The official video borrows from his choreography to "Rich Man's Frug" from the film "Sweet Charity." Beyonce's "Get Me Bodied," En Vogue's "Never Gonna Get It," and Freemason's "When You Touch Me" also feature elements of this choreography in their music videos.
A lot of British television, back in the '90s and early '00s were not adapted for live vocals, much like American daytime television was. The UK required non-live vocals, due to technical and audio difficulties.
