Via Wikipedia "The bombe was an electro-mechanical device used by British cryptologists to help decipher German Enigma-machine-encrypted secret messages during World War II."
To give proper credit, it would be fair to say here that the actual machine was designed by Poles. From the same source :
"The British bombe was developed from a device known as the "bomba" (Polish: bomba kryptologiczna), which had been designed in Poland at the Biuro Szyfrów (Cipher Bureau) by cryptologist Marian Rejewski, who had been breaking German Enigma messages for the previous seven years, using it and earlier machines."
Learn more about the Bombe Machine here
https://en.wikipedia.org/wiki/Bombe
"The British bombe was developed from a device known as the "bomba" (Polish: bomba kryptologiczna), which had been designed in Poland at the Biuro Szyfrów (Cipher Bureau) by cryptologist Marian Rejewski, who had been breaking German Enigma messages for the previous seven years, using it and earlier machines."
https://en.wikipedia.org/wiki/Polish_School_of_Mathematics
was top-notch