In the greater world
Outside of England I would mention Konrad Zuse.
"Konrad Ernst Otto Zuse ( 22 June 1910 – 18 December 1995) was a German civil engineer, pioneering computer scientist, inventor and businessman. His greatest achievement was the world's first programmable computer; the functional program-controlled Turing-complete Z3 became operational in May 1941. Thanks to this machine and its predecessors, Zuse has often been regarded as the inventor of the modern computer.
Zuse was noted for the S2 computing machine, considered the first process control computer. In 1941, he founded one of the earliest computer businesses, producing the Z4, which became the world's first commercial computer. From 1943[8] to 1945[9] he designed Plankalkül, the first high-level programming language.[10] In 1969, Zuse suggested the concept of a computation-based universe in his book Rechnender Raum (Calculating Space).
In 1950/1951, the Z4 was the only working digital computer in Germany, and the second digital computer in the world to be sold, beating the Ferranti Mark 1 by five months and the UNIVAC I by ten months, but in turn being beaten by the BINAC (although that never worked at the customer's site[21]).