Zak was born in Manchester in the north of England in 1999. He was a member of the Royal Exchange Young Company where he appeared in three productions including Janne Teller's Nothing, before moving on to more formal training in acting at The Manchester School of Theatre, where he graduated in 2020.
His professional credits include theatre work, playing Joseph Merrick in the critically acclaimed Real and Imaginary History of the Elephant Man, BBC Radio dramas Letter to Louis and Tinsel Girl, and he is the voice of the Thimble series of children's audio books.
Zak's on-screen work includes both comedy and drama include titles produced for BBC Studios, Paramount, Netflix, ITV, Sky Drama, Channel 4 and Channel 5, including the BAFTA winning short comedy
Mobility (2023) for BBC Three,
Bridgerton (2020) and
The Hardacres.
He has cerebral palsy and is an ambulant wheelchair user meaning he can and has acted both in and out of his chair. This enables him to play both disabled and non-disabled roles, such as playing both Tiny Tim and Young Marley in Mark Gatiss's adaptation
A Christmas Carol: A Ghost Story (2022).