Called to the Guernsey Bar as an Advocate in 1982, Deputy Harwood served as a partner of law firm Ozannes until the end of 2009 and as a consultant until retirement in December 2011.
Harwood was appointed a commissioner of the Guernsey Financial Services Commission in 2004 and served as chairman from 2006 until retirement in January 2012.
He was chairman of the panel to review Guernsey's Machinery of Government from 1998 to 2000.
According to BBC News, he won a vote of 27-20 against the only other candidate Deputy Jonathan Le Tocq.
Harwood was appointed Officer of the Order of the British Empire (OBE) in the 2022 Birthday Honours for services to Guernsey.