More than 50,000 households now receive 'superfast' fibre optic broadband from the internet and TV provider.
TalkTalk gained 69,000 new customers in the last three months of 2012, while more than 80,000 households now bundle TV with at least one other TalkTalk service, according to the broadband provider's latest financial results.
In the final quarter of last year, over 22,000 signed up for TalkTalk's fibre optic broadband, bringing its total number of 'superfast' customers to 52,000. The company's mobile phone deals also proved popular, attracting 35,000 new customers.
Dido Harding, TalkTalk's CEO, said: "We have returned out total customer base to growth for the first time in three years - and important milestone on our journey to become a growing and more profitable business.
"We successfully launched TV and mobile handsets, and the growth in take-up by both existing and new customers underlines the scale of opportunity we see in these additional products."
As well as just the commercial success, there was also good news in the customer satisfaction stakes. Complaints from customers to telecoms regulator Ofcom were reduced by 48% during 2012.
However, there could be some troubles looming over TalkTalk if reports of persistent network problems are accurate. According to The Register, customers in south-east England have been suffering technical issues for several days.
"A number of readers got in touch to gripe about [TalkTalk's] broadband service slowing down to a crawl on Friday night. Sadly the problem remained in place all weekend and continues today," the tech website explained on Monday.
A TalkTalk spokesperson told broadbandchoices.co.uk: "Some of our customers may have experienced slow speeds over the weekend, because of a network error affecting parts of London and the south-east, and Northern Ireland.
"Engineers fixed the problem on Monday morning and a full service was restored. We apologise for any inconvenience this may have caused."