Hundreds of Virgin Media users have complained of repeated internet outages for the second day in a row.
Social media users have written to the broadband provider to complain of days of sporadic cuts to their service.
Following an outage on Tuesday, a Virgin Media spokesperson insisted it was a "localised issue" in the south of the capital.
But the Downdetector website recorded more than 600 complaints across the UK on Wednesday morning.
Despite the high number of reported problems, a Virgin Media spokesman told the Standard there were no widespread or major issues with its services.
Most complaints were recorded in London, Leeds, Preston, Birmingham and Nottingham.
A high number of customers in Portsmouth, Norwich and Peterborough have also reported problems.
More than 200 people reported cuts to their services at 1am on Wednesday, before another spike in complaints at 7.30am.
One customer wrote on Twitter: "Cheers for this, looks like I might have to go into the office at the height of a pandemic..."
A second said: "Given the frequency of your internet drop outs I feel like virgin using the term 'stay connected' is incorrect."
A third wrote: "I've been on down detector for the past hour and turns out pretty much everyone has the same issues as us."
Other customers also reported problems on the Virgin Media website, with some saying it was slow to load and others couldn't access their accounts.
A spokesman for Virgin Media told the Standard: "Down Detector is not an accurate representation of our network status.
"There are no widespread or major issues with our broadband, TV, mobile or phone services.
"There is a technical problem affecting some people accessing their 'My Virgin Media' account and this is being looked into.
"This will not impact connectivity. We apologise for any inconvenience caused."
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