He was the writer, star and a producer of
Pulse which saw him nominated for the 2018
AACTA Award for Best Actor in a Leading Role. He was nominated for the 2018
Helpmann Award for Best Male Actor in a Play for the
Malthouse Theatre presentation of
The Real and Imagined History of the Elephant Man. In 2020, Monks won Best Performer in a Play at
The Stage Debut Awards for his performance in
Teenage Dick at the
Donmar Warehouse. In August 2024, it was announced that Monks had been cast as Ser Manfred Dondarrion in the upcoming series
A Knight of the Seven Kingdoms. The series premiered in 2026. In 2025, Monks played Brian Irvine in the mystery thriller series
All Her Fault, and in 2026 appeared as Jamie Lawson in
BBC One drama
Waiting for the Out. == Personal life ==