Jonathan Helliwell, media analyst at Panmure Gordon, told CNBC Friday that there were always going to be "big cultural issues" with two global brands tying the knot, but added that "both sides start with the right perspective."
"Nikkei is a Japanese powerhouse that is very keen to go global...Nikkei has a reputation of editorial independence which is absolutely key," he said.
The agreement will be the first $1 billion-plus acquisition globally of a newspaper publisher since 2013, according to research company Dealogic. It will also be the second largest cross border merger and acquisition deal on record targeting a newspaper, it also said, behind the $1.6 billion acquisition of Newsquest by Gannett in 1999.
Again, this historical data gives a mixed picture of the potential future for the FT. Critics in the U.K. have been scathing of Gannett and how it has transformed Newsquest in the last decade. One of its regional newspapers in London has been on the receiving end of strikes this year with staff reacting to the announcement of cost cutting and job losses.
"Nikkei will need to invest in the journalism to ensure there is proper resourcing and should listen to the ideas that its greatest asset - the staff - have for taking things forward positively," Laura Davison, an organizer at the U.K.'s National Union of Journalists, told CNBC via email.
"We would not be advising the Newsquest model which has failed to invest in journalism and appears only interested in the short-term bottom line," she added.