The phrase "newspaper proprietors" refers to the owners or individuals who own and run newspapers. They have the authority to control the content, direction, and business aspects of the newspaper. Full definition
Jay suggests the very fact that undertakings are made says something about the power of newspaper proprietors. (politics.co.uk)
The project is being driven by David Holmes Black a wealthy newspaper proprietor who happens to live in the Victoria constituency represented by Andrew Weaver in the BC Legislature. (planet3.org)
The Labour leader, Ed Miliband, on Tuesday became the only front - rank politician to disclose the meetings he has held with newspaper proprietors in the runup to the Leveson report. (theguardian.com)