Demmileigh trained at Nadines Dance Company, Stockton Riverside (Hartlepool), and The Urdang Academy (London).

Demmileigh’s theatre credits include Associate Choreographer in the new musical Who Do Ya Love (KC and the Sunshine Band), Johannes Radebe: Freedom Strictly (UK tour), Jack and the Beanstalk (The London Palladium), Warhol the Musical, Anton and Giovanni: Him & Me Strictly (UK tour), Maria in 9 to 5 the Musical (West End and UK tour), 2020 The Musical, Tess in Flashdance The Musical (UK and international tour), and Dance Captain in Sleeping Beauty (Swansea Grand Theatre).

Additionally, Demmileigh’s television credits include One Day (Netflix), flight attendant in a Pepsi Commercial, Ant and Dec Saturday Night Takeaway (ITV), The One Show (BBC), This Morning (ITV), Fragile (short film), Children in Need (BBC), Dancing with the Stars Ireland, and The Late Late Show (London).