All right, ladies, enough chatting. Back to your codes.
Another flashback shows Peggy as a prominent codebreaker at Bletchley Park during the war, when she is invited to become a field operative.
The establishing aerial shot is of the actual Bletchley Park mansion, which was a code-breaking and cryptography headquarters during World War II, located in Milton Keynes, England. This shot is a piece of stock footage pulled by the production.
MAP
The interiors of the secretarial/codebreaker pool and the director’s office all appear to have been shot on a soundstage.
(Agent Carter S02E04, 2016)

