Aviva is currently looking for a replacement for Scott, who first joined Norwich Union in 1973.
After qualifying as an actuary in 1979 he held a number of positions including chief investment officer and group finance director.
Following the merger creating Aviva in 2000 he became chief executive of the UK life business and then became executive director life International in 2003.
He has held the position of chief financial officer since July 2007
Chief executive officer Andrew Moss says: “In the course of his career Philip has occupied a number of very senior positions in the group and as CFO that experience has helped Aviva navigate successfully through some very difficult market conditions.”