Reuters News, a unit of Thomson Reuters, recently announced plans to start charging customers $34.99 per month for news on its website, Reuters.com.

The LSE bought financial news and information business Refinitiv, formerly a division of Thomson Reuters. It pays Thomson Reuters for news it distributes on Refinitiv terminals. Thomson Reuters holds a minority stake in the LSE.

In a joint statement, the LSE and Thomson Reuters said "there are ongoing and private discussions about our business approach and products."

"The foundation of our partnership is strong and we will continue to work together to deliver for all of our customers," the joint statement said.

About half of Reuters News' revenues comes from the Refinitiv agreement in the form of annual payments worth about $325 million, making Refinitiv the media company's biggest customer.

(Reporting by Huw Jones in London and Kenneth Li in New York; Editing by Paritosh Bansal and Edward Tobin)

By Huw Jones and Kenneth Li