By Natalia Drozdiak and Laurence Norman 

BRUSSELS -- Senior European Union officials on Wednesday decided to block CK Hutchison Holdings Ltd.'s multibillion-dollar purchase of Telefónica's British mobile operator O2, two people familiar with the matter said.

The decision will pave the way for a formal signoff on the decision by the bloc's 28 commissioners expected next week, the people said.

Senior technical experts meet to hash out final points of contention among the commission's various departments before final approval is sought. Once there is a consensus at this level, it is rare for commissioners to overturn it.

The EU has until May 19 to make a final decision on the deal.

The companies had offered commitments to help waive the deal through, but ultimately the remedies couldn't mollify the EU antitrust regulator's concerns the merger would lead to higher prices and less choice for U.K. consumers.

A spokeswoman for the commission declined to comment. Hutchison declined to comment.

The imminent EU decision represents a tougher attitude by EU regulators toward consolidation among telecom companies in the region, particularly in cases in which the number of operators in a given country shrinks from four to three, as would have been the case with CK Hutchison's U.K. deal.

The deal would have joined Hong Kong-based CK Hutchison's Three U.K., the country's fourth-largest operator, with Telefónica SA's O2, the U.K.'s second-largest mobile operator.

Telecom operators in Europe have been racing to merge in recent years in efforts to share costs as revenues dwindle. They argue they need to merge with rivals in the same country to increase investment in networks and to share costs.

EU antitrust chief Margrethe Vestager's predecessor, Joaquín Almunia, waved through a series of so-called "four-to-three" deals, including in Germany and Ireland, but in speeches, she has warned that excessive consolidation can lead to larger bills for customers and can kill incentives to innovate.

Write to Natalia Drozdiak at natalia.drozdiak@wsj.com and Laurence Norman at laurence.norman@wsj.com

 

(END) Dow Jones Newswires

May 04, 2016 13:54 ET (17:54 GMT)

Copyright (c) 2016 Dow Jones & Company, Inc.
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