Jack Nielen is an English actor. He was born on August 05, 2009 in Chelsea, London. Jack appears in a central role in the new critically acclaimed feature film Spencer (2021), directed by Pablo Larraín, where he portrays Prince William opposite Kristen Stewart playing Princess Diana. The movie premiered at The Venice Film Festival on September 3rd 2021. The UK premiere at the London Film Festival took place on October 7th. Spencer is now available in cinemas in the US, UK and beyond.