Peter Byrne was a British actor who made his name by playing George Dixon's son-in-law Andy Crawford in the long-running BBC Television serial Dixon of Dock Green for twenty years from 1955 to 1975. Peter Byrne was a British actor who made his name by playing George Dixon's son-in-law Andy Crawford in the long-running BBC Television serial Dixon of Dock Green for twenty years from 1955 to 1975.