Sheeran was also at BBC the same morning, covering Little Mix’s “Touch,” when Perry spotted him walking past the studio window. She jokingly flipped him off for “keeping her off the No. 1 spots” (“Shape of You” has topped the Billboard Hot 100 for a third total week, while Perry’s “Chained to the Rhythm” currently stands at No. 4). The quip urged Sheeran to enter the studio and join in on Perry’s interview with Nick Grimshaw.
Ed Sheeran Crashes Katy Perry's BBC Radio 1 Interview: Watch