Mavis Batey

Mavis Batey
She was  employed by London Section to check  columns of  The Times for coded spy messages^, in 1940 she was recruited to work as a codebreaker at Bletchley Park. She worked as an assistant to Dilly Knox, and was closely involved in the decoding  before the Battle of Matapan. According to The Daily Telegraph, she became so familiar with the styles of single enemy operators that she could determine that two of them had a girlfriend called Rosa and this insight allowed her to develop a successful technique.In December 1941 she cracked a code between Belgrade and Berlin that enabled them to use a machine that was  previously thought to be unbreakable. While at Bletchley Park she met Keith Batey, a mathematician and fellow codebreaker whom she married in 1942.