Popsugar Entertainment Taylor Swift Who Is Speaking on Taylor Swift's "London Boy"? No, That's Not Joe Alwyn Speaking on Taylor Swift's "London Boy" — It's Idris Elba! 23 August 2019 by Kelsey Garcia View On One Page Photo 1 of 2 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Listen to Taylor Swift's "London Boy" Previous Next Start Slideshow Taylor SwiftIdris ElbaMusic