Yorkshire and the Humber
Stainless steel was invented in 1913 by Harry Brearley of Sheffield, working for Firth Brown Steels (now called Sheffield Forgemasters). SAE 304 stainless steel is the most common stainless steel today, invented by Dr William Herbert Hatfield FRS in 1924 at Firth-Vickers known as Staybrite 18/8, a chromium-nickel steel. Many Swiss watches were mostly made out of Staybrite.
Stainless Stephen
He is said to have based the idea during a radio course he took while on military service. Stainless Stephen appeared in Radio Parade (1933), a film of (then) current music hall acts. He supported Will Hay at the Victoria Palace in 1944, and appeared on the bill at the London Palladium's Royal Command Performance in 1945.