The deal will allow customers to watch live boxing and wrestling events through Sky Sports Box Office, as well as extending a continuing wholesale deal giving access to the main Sky Sports and Sky Movies channels.
It builds on an agreement earlier this year allowing TalkTalk customers to buy a ‘day pass’ for Sky’s sports channels through its internet TV service NOW TV on the YouView platform.
The Box Office service can already be accessed by customers of Virgin Media in the UK and UPC in Ireland.
Sky is battling BT over sport after the telecoms giant encroached on its dominance of Premier League football with a three-year deal to show 38 games a season, before snatching Champions League rights for three years from 2015 for £897m.
The satellite broadcaster has responded with the launch of a new channel, Sky Sports 5.