Simon was born in 1935 at Clayfield, the only child of Phillip and Laura Moxon. Wartime stringencies still allowed for summer holidays at the South Coast and Nanango.
His secondary schooling was at Church of England Grammar where he enlisted in the Cadet Corps. After Senior, he studied to become a Chartered Accountant and worked for Cooper Brothers, Savage & Co. In 1955 he was called up for National Service which he completed at RAAF Base Amberley.
1963-65 saw him gaining further experience with Cooper Brothers & Co in London, after a 5-week voyage on T/V Fair Sky. On return, he was admitted to a partnership in the Brisbane company.
Simon married Margaret Newsom in 1970 and they raised 3 children in their Brisbane home. He joined another accountancy firm Penningtons until 1999. He enjoyed golf and amateur theatricals.
Simon combined interests in aviation and photography, leading to a book of photographs of aircraft movements at Brisbane Airport Eagle Farm 1946-1988. He learned to fly with RQAC in 1979 and gained an Unrestricted Private License with experience in many different aircraft types.
He joined QAM in 1983.