Greg's early success as a playwright launched a career as a successful writer over a wide variety of genres. His work is known for its hard-hitting observations about society in his native New Zealand.His first play was largely written in London in the late seventies, after he abandoned a novel. Foreskin’s Lament (1980) drew on the rugby culture of the period to comment more broadly on national codes and values. The play had influence far beyond the usual realm of theatre audiences and has become a New Zealand classic.His television writing has won numerous awards. BBC audiences may remember a four-part series starring Frank Findlay, Erebus: The Aftermath. He has written crime fiction under the pseudonym Alix Bosco, and won the 2010 Ngaio Marsh Award for Best Crime Fiction with Cut & Run.He has also ghost-written biographies for former All Blacks captain Richie McCaw (published in the UK as The Real McCaw ) and for New Zealand cricket captain, Brendon McCullum.During his university years he played rugby to the highest level, and was a Junior All Black and twice an All Blacks trialist. These days, he plays golf and walks the dog.His novel The Antipodeans was published in 2015 and long-listed in the 2016 Ockham New Zealand Book Awards for fiction. It spent 49 weeks in New Zealand's bestseller charts. It will be published in the UK by Lightning Books in 2018.The Antipodeans was written during his tenure of the Katherine Mansfield Menton Literary Fellowship in 2013.

“The Antipodeans is a gripping, skilfully constructed novel that knows more than any single novel has a right to know about the hazards of both love and war, loyalty and betrayal, Italian politics over the past eighty years and, oh yes, rugby”