And let us also not forget about Zygalski sheets[0] and Rejewski's Bomba[1].
I mentioned Tutte as Bletchley can take full credit for the inhouse reverse engineering and attacks on Tunny, the Lorenz cipher, a more difficult cipher than Enigma and one used for more sensitive traffic by the Germans.
Tunny had an entirely seperate dedicated class of machines used for its attacks.
https://en.wikipedia.org/wiki/Lorenz_cipher
https://en.wikipedia.org/wiki/Colossus_computer
Colossus is thus regarded as the world's first programmable, electronic, digital computer, although it was programmed by switches and plugs and not by a stored program.