Duncan Casey was born in Nassau, The Bahamas. He is the son of Zoe Nathanielsz and Philip Casey MBE. His Grandfather, Ray Nathanielsz was a renowned architect who designed and built houses in The Bahamas for a wide range of clients, among them Sydney Poitier. He is known for his work as an actor on UK television and in film. He is also the co-founder of DX2 Media Ltd, a film fund dedicated to the championing of British film and talent.