A spokeswoman for News International refused to discuss the name of the site, but said: "We can confirm that the site is at the junction of the M25 and the A10".
PrintWeek revealed two weeks ago that the Rupert Murdoch-owned press group was planning to build a replacement for Wapping on a 40-acre site it owns on the Park Plaza business park.
The site is bounded by the M25 and the A10 to the south and west, by the London-Cambridge railway line to the east, and the B198 to the north.