Alan Blumlein (1903-1942) was a pioneer in the field of sound technology. He carried out work on standards for long-distance telecommunications and the reduction of cross-talk effects. At EMI in Hayes, Middlesex, he invented stereo sound, devising techniques still in use today.
It is said that he was prompted by the abysmal sound quality of a film at the cinema! He certainly solved that problem and he was recognised posthumously with a Grammy Award in 2017.