John Farquhar was born in Cairns, Australia, in 1950 and joined the Royal Australian Navy in 1968.
He served in training, logistic and administrative appointments at sea and ashore, before transferring to the Royal Navy as a senior officer in 1989. He worked in MoD Whitehall until 1995 and then in NATO in Italy, Bosnia and Brussels, before leaving the RN in 2005, mostly on the personal staffs of very senior officers.
After managing a logistics company in Afghanistan in 2006, he returned to the RAN in Canberra before retiring in 2015. He married in 1976, has two children and lives in Salisbury, England.