The Outlander TV series and its possible impact on the Independence Referendum were raised by Sony executives before a meeting with Prime Minister David Cameron last year.
In the Wikileaks cache of leaked memos from the Sony organisation, an email written by Keith E. Weaver, executive vice president at Sony Pictures Entertainment, which produces Outlander, discusses a meeting with the Prime Minister and in particular mentions the "importance" of the TV series to the political situation last year.
Outlander, based on the best selling books by Diana Gabaldon and shot in Scotland, was broadcast in the UK well after other countries.
There was much speculation on social media and with Outlander fans last year that the delay was related to the date of the independence referendum in September.
In the time-travelling romantic drama series, the action takes place in the 18th century where rebel Scots are fighting against the forces of the UK state.
It is now viewable on the Amazon Prime streaming system.
In the background briefing document for a "PM Cameron event" last summer, Mr Weaver writes to other Sony executives: "Your meeting with Prime Minister Cameron on Monday will likely focus on our overall investment in the U.K. - with special emphasis on the jobs created by Tommy Cooper [the ITV show], the importance of Outlander (i.e., particularly vis-Ã -vis the political issues in the U.K. as Scotland contemplates detachment this Fall), and the growth of our channels business..."
A spokeswoman for Sony declined to comment on the email.
At last year's Edinburgh International Book Festival, Gabaldon speculated on why the UK broadcast of the series was apparently delayed.
At the time, Sony were in discussions with broadcasters.
Gabaldon said: "There are in fact negotiating with one or more UK TV suppliers.
"Why that deal has not come to a conclusion, I don't know, they have been at it for three months at least.
"There has been talk and rumour and speculation, even though there is no evidence on which to speculate, but the most common rumour is they are waiting until after the Scottish referendum - but there is no evidence to suggest that is true. "You can take that for what it's worth."
One of the stars of the Outlander TV series, Sam Heughan, who plays Jamie Fraser, recently spoke of his support for Scottish independence and his disappointment at the result of the recent referendum.
Heughan, who plays the key role of Jamie Fraser in the US series said that initially he was not a supporter of Scotland leaving the UK.
However, he soon became "very much for Yes".
In an online video interview he said: "When I first heard about the arguments I very much thought it wasn't a great idea but just having spent some time there and discussing it more, I thought it was a chance for more democracy in Scotland."