Expert opinions generally support the merger, with analysts suggesting it could lead to more efficient investments and improved market competition.

Vodafone and Three maintain that their merger is beneficial for growth, customers, and competition, and they plan to cooperate with the CMA to address any outstanding issues.

A final decision from the CMA regarding the merger is expected by December 7, following a five-month investigation that began in January.

The CMA has proposed remedies, including divesting certain assets and legally binding commitments on investments to address competition concerns.

CMA inquiry chair Stuart McIntosh emphasized that the agency will assess how Vodafone and Three could mitigate concerns regarding retail and wholesale customer impacts.

Concerns have been raised about Three's ownership by CK Hutchison Holdings, which is subject to a national security law in China, potentially affecting sensitive data sharing.

The CMA's suggested remedies aim to protect both retail and wholesale customers while ensuring network investment commitments are upheld.

Despite the CMA's concerns, Vodafone and Three argue that the merger would enhance mobile service quality and expedite the rollout of next-generation 5G networks.

The U.K. Competition and Markets Authority (CMA) has issued a provisional ruling against the proposed $19 billion merger between Vodafone and CK Hutchison's Three UK, suggesting it could significantly reduce competition in the telecommunications market.

The CMA's provisional view indicates that the merger would decrease the number of major mobile network operators from four to three, potentially raising bills and limiting service options for tens of millions of users.

Vodafone and Three UK have rejected the CMA's claims, asserting that the merger would not lead to increased prices for customers and would instead create a stronger competitor against market leaders.

The CMA's investigation into the merger was prompted by initial assessments that indicated a substantial lessening of competition could occur, leading to a more in-depth Phase 2 investigation.