Born in London in 1986, Green studied at Central Saint Martins, completing his BA and an MA under Professor Louise Wilson; his MA graduation collection won the L'Oréal Professionnel Talent Award in 2012. He launched his eponymous label that year and debuted in 2013 through Fashion East's MAN initiative, drawing acclaim for sculptural silhouettes and hand-crafted detailing.
Recognised as one of the most influential voices in contemporary menswear, Green has won Emerging Menswear Designer (2014), the BFC/GQ Designer Menswear Fund (2016) and British Menswear Designer at the Fashion Awards (2016–2018), and was appointed MBE in 2022. He has collaborated with adidas Originals, Moncler, Valentino, Fred Perry and others, and in 2023 became head of the Fashion Department at the University of Applied Arts Vienna.