Virgin Media has made ultrafast broadband speeds available to more than a million homes as a result of Project Lightning.
The landmark was achieved at a home in Walsall, West Midlands, three years after the £3 billion scheme was launched.
The aim is to connect four million premises to the ultrafast broadband network. Homes will be able to receive broadband speeds of up to 300Mbps, while businesses will get speeds of up to 350Mbps.
Speaking to the Times, Virgin Media Chief Executive Tom Mockridge said: "It's a big job, but we are pleased with the outcome."
This comes shortly after Virgin Media was named as one of the best performers in Ofcom's complaints data for July to September 2017.
The provider was the subject of just 14 complaints per 100,000 customers - beating the industry average of 18 complaints per 100,000 customers during Q3 2017.