Recently, McGrath portrayed David Collins in the 2012 feature film Dark Shadows, which earned him a 2013 Young Artist Award nomination as Best Supporting Young Actor in a Feature Film. He portrayed Tad Lincoln in Steven Spielberg's Lincoln.
He was born and raised in Melbourne, Australia. He then moved to Birmingham, UK, and was raised there. His mother, Heidi Chapman, is a neuroscientist, and his father, Craig, is an anaesthetist. He is the older brother of actors Zen and Winta McGrath. He portrayed Jerry Hickfang in the 2015 comedy thriller The Voices, which was played as an elder person by Ryan Reynolds.
