Yassaie came to Britain in 1976 from Iran and became a United Kingdom national in 1984. He studied Electronics and Communications at the University of Birmingham gaining a first class honours Bachelor of Science degree in 1979. He stayed at Birmingham to complete a Doctor of Philosophy degree on the application of Charge-Coupled Devices (CCDs) to Sonar.
As an Iranian national, Yassaie gained a first class honours Bachelor of Science degree in 1979.
The context stated that Yassaie was an Iranian until 1984 when he became a British national.  Therefore, when he achieved his BS in 1979, he was still Iranian.