London Tyler Holmes (born March 27, 1991), known professionally as London on da Track, is an American record producer, rapper, and songwriter. He is a frequent collaborator of fellow Atlanta rapper Young Thug and has also worked with Kodak Black, Nicki Minaj, Birdman, Lil Wayne, Lil Baby, Rich Homie Quan, Gucci Mane, Giggs, Drake, Post Malone, T.I., 21 Savage, 50 Cent, Sfera Ebbasta, Summer Walker, Roddy Ricch and Ariana Grande, among others.

Source: Wikipedia (https://en.wikipedia.org/wiki/London_on_da_Track)