The award-winning comedy, based on the inner workings of the U.K. government, stars Oscar-winning Scottish actor Peter Capaldi as spin doctor Malcolm Tucker, whose language is rife with expletives.
BBC America bosses took the decision to block out the offensive words for U.S. audiences, and Armstrong is baffled by the move, branding it an ""error"".
He tells the BBC, ""They should at least have a conversation with (creator) Armando (Iannucci) and check what they're going to do with it before they put it out. It seems a little odd... I think if it's on quite late at night people know what they're getting and it's part of the programme.
""I think it's an error probably. We always wanted to do something that was behind the scenes in politics and part of that is that people use a lot of swearing in high-pressure situations. I think it's a shame.""
A BBC America spokesman tells Chortle.co.uk, ""BBC America abides by basic cable television common practice in the U.S. in using bleeps to cover profanity in its programmes.""