After leaving Watford Electric in 1968 Tanner worked for British AeroSpace in their Precision Design Department designing guidance systems and components for the aerospace industry. A career move in 1970 involved transferring closer to home and working as a design draughtsman for Dymar Electronics, manufacturers of mobile radio telephones and audio/rf test equipment.
In October 1971, Geoff moved to Cambridge and joined Rupert Neve & Co. Ltd. in Melbourn, near Royston, Herts., as an Electronic Design Draughtsman. Progress and his thorough understanding of the products manufactured (complex broadcast and recording consoles) led to his promotion to Head of the Electrical Design Drawing Office less than 12 months later.
After an ongoing career at Neve & Co. Ltd. and after the starts of several takeovers of the company, Geoff finally created his first piece of gear and teh new brand "Aurora Audio" was born.