Virgin Media’s broadband service was taken offline for tens of thousands of users in the run-up to peak hours.
The Downdetector service recorded more than 40,000 reports at 5:20 p.m., which coincided with the government daily coronavirus briefing.
Reports of a failure then began to decline before rising to more than 42,000 at 7.20pm.
Virgin Media said its peak hour is between 8 p.m. and 10 p.m.
Downdetector data suggests that there were 1,577 reports of failures at 8:30 p.m.
At 9:30 p.m., a live map on the website showed that most of the outages were in the south of the country.
A Virgin Media spokesperson said, “We are currently investigating an intermittent broadband problem that started earlier this evening. The problem causes broadband connectivity to drop for a few minutes before returning.
“We know that this is not due to increased use or lack of capacity, but to a technical failure of the network.
“Our teams are studying the problem urgently and are working hard to resolve it. We know how frustrating this is for customers and we apologize for the inconvenience. “
An affected user tweeted the business, writing, “It is a big inconvenience to try to work from home, please fix it before tomorrow. “