In 1963 Neville resigned from the civil service to contest the first elections to the House of Assembly in February–March 1964. He was elected from the West Papua Special constituency, defeating incumbent MLC Ron Slaughter.[1] During his first term in parliament he served as vice chairman of the Public Accounts and Public Works committees.[4] He was re-elected unopposed in the 1968 elections from the Southern Highlands Regional constituency,[5] and served on the District Advisory committee.[4] He was re-elected again in 1972 from the renamed Southern Highlands Provincial constituency, and was awarded an MBE in the 1974 Birthday Honours. Following independence in 1975, the House of Assembly was renamed the National Parliament.[6]
He retired from politics prior to the 1977 elections to concentrate on his business. He died in May 1986 when a truck he was driving hit a bus on the road between Mendi and Mount Hagen.[7] His son Tim later also became an MP.[8]