A number of Virgin Media customers could see the price of their broadband and phone packages increase by as much as £3.99 a month from February 1st 2016.
News of the potential rise comes on the back of the company's annual review, with Virgin set to write to subscribers about the rises, which will include a £1 line rental increase.
Virgin said it is currently focusing on boosting download speeds for customers for the third time since 2012, offering speeds of 200 Mbps.
As a result, customers on its Big Bundles will see prices increase, with Big Connection and Big Easy bills rising by £3.49 and all other Big Bundles going up by £3.99.
Those on other bundles and packages will see increases between £1 and £3.99, while broadband-only customers, whose prices changed in November, are unaffected.
Gregor McNeil, managing director of Virgin Media Consumer, said: “We are doing everything we can to keep prices as competitive as possible.
"Through the continuing investment in our network we are again upgrading our customers’ broadband speeds and providing unlimited downloads – meeting the growth in data consumption we see.
"Our customers want to do more online, so we are always making sure that our customers get more for the prices they pay.”
In writing to affected customers, Virgin will make it clear that customers are entitled to exit their contracts without paying a penalty.
Virgin is currently embarking on several new projects, including the introduction of Virgin Media WiFi next year, which will deliver home Wi-Fi through a brand new app that will automatically connect customers to Virgin Media WiFi hotspots.
The provider has also teamed up with Chiltern District Council in an attempt to create the UK’s first superfast high street.