Britain's competition regulator has launched a formal investigation into Paramount Skydance Corp.'s proposed $110 billion acquisition of Warner Bros. Discovery Inc. The move signals heightened regulatory scrutiny of the massive media consolidation deal that would reshape the entertainment landscape.

The $110 billion transaction represents one of the largest media mergers in recent history, combining Paramount's entertainment assets with Warner Bros. Discovery's extensive content library. UK merger rules require such deals to undergo detailed review when they raise competition concerns or impact national interests in the media sector.

Regulatory approval from the UK could prove pivotal for the deal's completion, as international jurisdictions often coordinate their reviews. The investigation will examine whether the merger creates a dominant media entity that could reduce competition in content markets or advertising.

Investors are watching closely as the outcome could set precedent for future media consolidation. A blocked deal would mark a significant regulatory pushback against industry consolidation efforts.