Louis was one of the featured vocalists on the Artists for Grefwell 2017 charity single "Bridge Over Troubled Water", along with Liam.
Louis has five younger half-sisters and a younger half-brother by his mother: Charlotte (Lottie), Félicité (Fizzy), twins Daisy and Phoebe, and twins Doris and Ernest. Louis was a sixth form student at Hall Cross School, a state comprehensive school, and previously a pupil at The Hayfield School.
He has one younger half-sister, Georgia, by his father. While he was a student at Hall Cross, Louis starred in several Scholastic musical productions at this school, including Grease, which sparked his interest in performing.
On March 26, 2010, when he was 18 years old, Louis auditioned for The X Factor with "Hey There Delilah" by Plain White T's.
In April 2015, Louis started his own record label, an imprint of Simon Cowell's Syco label.
Throughout 2016, Louis built the profile of an pop-punk girl band (now disbanded), and cross-promoted English independent group High Tyde.