Post Office Telecoms has now taken on the 60,000 customers moving over from Fuel Broadband.
In June this year, Fuel Broadband informed customers it was closing down and that their service would be transferred to the Post Office.
The acquisition of Fuel Broadband by Post Office Telecoms has now been completed, with customers seamlessly transitioning over to the new provider.
Customers should see no change in the service they are used to receiving, as the Post Office uses the same supplier as Fuel Broadband.
Meredith Sharples, Director of Telecoms at Post Office, commented: "We are delighted to welcome more than 60,000 new customers to the Post Office, where they can now benefit from our great service at a highly competitive prices.
"The acquisition demonstrates our commitment to further growth in the telecoms business."
Sharples said the Post Office provides a "strong and relevant telecoms offer", with products including high-speed unlimited fibre packages delivering speeds of up to 76Mbps.
In addition, he stated that the organisation boasts a "unique insight and understanding of UK consumers".
"We look forward to fulfilling our growth strategy and seeing our telecoms business go from strength to strength in the years to come," Sharples added.
As part of its effort to enhance the customer experience, Post Office Telecoms is continuing to invest in its customer service teams in Preston and Selkirk.
This, it said, is helping to make its services better for customers and demonstrates that telecoms is a "vital and growing" part of the organisation.