Corrected entry: There's an external shot of the British Airways jet that Frost is flying over to the US on. The logo is British Airways, but on the tail is BOAC's logo.
Corrected entry: Richard Nixon to Frost: "I didn't see them (the interviews) when they went out." TV programs "going out" is a purely British TV industry term. Nixon instead would have referred to the interviews as not having seen them when they "were on" or "when they aired."
Correction: This appears to be entirely based on your opinion of what phrases might or might not be used by a given individual. Opinions are not considered valid sources for mistakes. Please provide evidence that no American individual, particularly an experienced, media-savvy international politician like Nixon, would ever use such a phrase.
Correction: The British Airways / BOAC hybrid scheme was used for some time after BOAC was dissolved in 1974 as it took some time to re-paint all of the planes. The film is therefore correct.