The level of knowledge of this lady expert is more than poor, which indicates me to conclusion that level of this tv show is poor as well, please return to school and learn about enigma and few POLISH cryptographers (Marian Rajewski, Jerzy Rorzycki, Henryk Zygalski), or maybe in school they are teaching you like that? not British or other nation but POLISH mathematicians broke Enigma few years before WW II even started.

P.S.

WTF British invented how to decode it ? WTF ???? READ AND LEARN

The Polish CipherBureau first broke Germany's military Enigma ciphers in December 1932. Fiveweeks before the outbreak of World War II, on 25 July 1939, they presentedtheir Enigma-decryptiontechniques and equipment to French and British military intelligencein Warsaw.[3][4][5] From1938 onwards, additional complexity was repeatedly added to the machines,making the initial decryption techniques increasingly unsuccessful.Nonetheless, the Polish breakthrough represented a vital basis for the laterBritish effort.[6]During the war, British codebreakerswere able to decrypt a vast number of messages that had been enciphered usingthe Enigma. The intelligencegleaned from this source, codenamed "Ultra" by the British, was asubstantial aid to the Allied wareffort.[7]