Customers will be able to remain on O2 and Be Broadband's home broadband networks until spring 2014, it has been revealed.
Sky - which bought out the sibling home broadband providers in May this year - has confirmed it will continue to support the platforms for now.
As such, customers who do not wish to migrate to Sky can remain on their existing broadband deal until early next year.
However, from spring 2014, they will have to move to a new broadband provider.
Customers who do wish to keep their existing O2 or Be services need to call Sky's customer service team on 08448 245 480 to inform them of their plans.
This is because Sky is about to begin the migration process, which will see approving O2 and Be households moved over to its own network.
Sky explained that it is planning to move customers in small groups, with each household notified by letter of when their service will switch over, approximately two months in advance.
The letter will include more information about the broadband packages available with Sky, and the price they will be charged.
"If you are happy with all the information in your letter, you don't need to do a thing. If you're happy to move to Sky, simply carry on using, and paying for, your existing services as normal," the broadband provider explained.
"We'll assume from your payment for your existing services - after the date specified in the letter we send you - that you agree to move on the terms we will have sent to you."