The Scottish hitmaker, 32, was forced to pull out of two club gigs in Las Vegas last week so that he could continue to recover from the incident on May 20 when the vehicle he was a passenger in collided with an oncoming car.
Taylor Swift's boyfriend has been keeping a low-profile ever since, but earlier this week, Harris returned to social media, revealing he had headed back to London.
He took to SnapChat to post a photo of himself sitting in the backseat of a car, and used a picture filter which tagged his location as the British capital.