John Malone's Liberty Global has struck a deal to buy British cable group Virgin Media for about $15.75 billion in stock and cash.
The move will put the US billionaire up against old rival Rupert Murdoch again.
The companies announced the deal in a statement late last night, after Virgin Media, the second-biggest pay-TV provider in Britain behind Murdoch's satellite group BSkyB, confirmed Liberty's approach earlier in the day.
Including debt, the deal would be worth more than $23 billion and would give Liberty entry to one of Europe's biggest and most competitive telecom markets.
It would allow it to apply lessons learned as a pay-TV and broadband provider in 11 other European countries.
It would also put Malone's Liberty in a strong position to challenge Murdoch as cable groups across the region start to assert their authority over traditional telecoms firms with the offer of super-fast broadband and pay-television.
Liberty will pay about $47.02 for each Virgin Media share based on yesterday's closing prices, using cash and shares of its class A and C stock.
Malone, whose group has 19.6 million customers, came up against Murdoch a decade ago when Murdoch's News Corp and Liberty Media vied for control of DirecTV Group, the largest US satellite TV broadcaster.
The stand-off ended when both sides backed down. News Corp sold its one-third stake in DirecTV to Malone's group and Malone sold 16% of News Corp that Liberty had acquired, giving the Murdochs fuller control over their company.
Malone made his fortune through a series of deals that transformed, and ultimately consolidated, the US cable industry into one dominated by a few big players. Murdoch's BSkyB leads the British pay-TV market with 10.7 million customers compared with Virgin Media's 4.9 million.
Virgin Media emerged two years ago from years of heavy losses from a costly network expansion. But its cables still only cover half of Britain and analysts see potential for more growth.
The approach for Virgin Media follows a period of stabilisation engineered by chief executive Neil Berkett after a debt restructuring. Virgin Media was formed by the merger of cable groups Telewest and NTL and mobile operator Virgin Mobile in 2006 to huge fanfare led by major shareholder Richard Branson, who still owns around 3% of the group.
Its first few years were marred by lengthy and costly legal fights with BSkyB over access to channels and content, which damaged Virgin Media's reputation.
Appointed in March 2008 to turn things around, Berkett shunned that approach, settled the dispute and slowly built up Virgin Media's customer base by focusing on a superior broadband and technology offering.
While that enabled Virgin Media to post its first annual profit in 2011, some argue it has not been aggressive enough in signing up new customers. A deal with Liberty could help Virgin Media push more aggressively into offering its content on smartphones and tablets - a strong area for BSkyB.
Instead of building out its network, the group has bought up 24% of its stock. Partly as a result, its shares have risen almost 160% since March 2008. They closed at $38.69 on Monday having recovered from a low of $2.96 at the end of 2008 when the financial crisis hit.
The group sells TV, telephony and broadband and also competes with BT and online firms such as Lovefilm. Its biggest shareholders are Capital World Investors which own 14.6% and Capital Research Global Investors which own 10.9%.
Having dominated the US cable industry, Malone's Liberty has built its presence across Europe by snapping up companies. A deal would bring him an asset he initially tried to control when it was still NTL and Telewest.
An offer is unlikely to face any regulatory objections, analysts say, but it could prompt some interest from private equity groups who have traditionally favoured cable groups. Liberty's latest big deal came in Belgium where it increased its stake in Belgian operator Telenet to 58%.
Liberty, which plans to redomicile to the UK as part of the deal, said it expects the deal to generate around $180m of annual cost savings after it fully integrates Virgin Media.
It said it plans to fund the roughly $5.9 billion cash portion of the deal through debt financing and available liquidity at both companies, increasing Virgin Media's debt by more than $3 billion. Liberty also said it plans to launch a two-year, $3.5 billion share buyback programme after the deal closes.