BT witnessed strong subscriber growth during the second quarter, adding new customers across its retail and wholesale businesses.
More customers signed up for BT-branded broadband deals between July and September, while there was also an increase in the number of households supplied with internet services over its Openreach network.
In terms of retail customers, BT secured 88,000 net additions - 48 per cent of the total recorded by Openreach during the period. The total number of subscribers using the network stands at 7.5 million.
When wholesale subscribers are included - those households supplied with broadband by firms such as Sky, TalkTalk, Plusnet and EE - 182,000 customers were added during the quarter.
In total, 18.8 million UK customers access their fixed-line broadband using the Openreach network.
The number of households with access to BT fibre services continues to increase, as the firm's commercial and Broadband Delivery UK rollouts progress across the UK.
More than 60,000 new premises are being passed by the next-generation network each week, with the majority of recent gains being in rural areas.
At the end of Q2, 21 million homes and businesses had access to a BT fibre deal - either directly through BT or over its wholesale network.
Some 344,000 customers took out super-fast broadband deals between July and September, up on the 316,000 who did so in the corresponding period for 2013.
BT said this is the equivalent of a new fibre broadband customer joining its network every 22 seconds, 24 hours a day.
Of the total, 203,000 signed up for a BT fibre broadband deal, with the remainder taking out a package with wholesale customers such as Sky, EE and TalkTalk.
At the end of the third quarter, 3.3 million UK homes and businesses had a fixed-line BT fibre connection - 16 per cent of the total number of premises passed.
Some 34 per cent of BT's retail broadband customers are now taking a super-fast package from the firm, as opposed to a copper-based deal.
Gavin Patterson, Chief Executive of BT, said the service provider experienced "a solid quarter", with results slightly ahead of market expectations.
He claimed that the firm's Consumer business continues to perform well, largely thanks to the impact of BT Sport.
"Fibre is also driving growth with one in three of our retail broadband customers enjoying super-fast speeds," Mr Patterson stated.
"Our fibre footprint has increased to more than 21 million premises and will continue to grow."
He said BT continues to see "strong demand" across the market for the faster download and upload speeds that fibre services offer.