Deadline day has arrived for Sky, which is unlikely to reach a deal with Discovery Communications over its portfolio of 13 channels.

Unless the two companies come to an agreement, the following channels will no longer be available to Sky TV and Now TV customers from 1 February:

Animal Planet

Discovery HD

Discovery History

Discovery Home & Health

Discovery Science

Discovery Shed

Discovery Turbo

DMAX

Eurosport1

Eurosport2

Investigation Discovery

Quest

TLC

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The TV firms have been embroiled in a fierce war of words, with Discovery accusing Sky of furthering “its own commercial interest over those of viewers and independent broadcasters” and Sky branding Discovery’s claims as “misleading” and its actions as “aggressive”.

Discovery’s #KeepDiscovery Twitter campaign has struck a chord with customers, many of whom are threatening to turn their backs on Sky if the likes of Eurosport1 and Animal Planet disappear from its service.

Sky has given no indication that customers will be treated to discounts as a result of the loss of channels, but has attempted to calm their anger by highlighting the similar types of content it will continue to offer.

“Sky doesn’t boot channels off our platform,” a post on Sky’s website reads. “If Discovery don’t want their channels to disappear, as their public campaign suggests, they could have made arrangement to stay on Sky, including free to air with advertising funding or with their own subscription, but they’ve chosen not to do so.

“Our commitment to our customers is this: We will spend every penny that we were going to pay to Discovery on more and better content that our customers value. This will come from sources around the globe and home grown shows and documentaries from the UK. We will continue to offer customers a huge range of content including hundreds of shows from The History Channel, National Geographic, PBS, Sky Arts and Sky Atlantic, along with more amazing sport on Sky Sports Mix, available to all our customers.”

Sky customers not satisfied by this can instead access Discovery, Eurosport, TLC, Animal Planet and Investigating Discovery on Virgin Media and BT TV.