BT enjoyed another strong quarter between October and December 2011, increasing subscriber numbers and extending its fibre broadband coverage.
The broadband provider added a net 146,000 customers in the UK during Q4, taking the total number to 6,144,000.
This was down slightly on the 166,000 net additions achieved between July and September 2011, but still represents strong growth for BT's broadband packages.
BT will be hoping to attract more customers to its fibre-based Infinity service during 2012, particularly as the firm has extended coverage to seven million homes and businesses.
More than one million premises were added to the fibre network during the final three months of the year - and it is now up to homeowners and businesses to sign up for super-fast download speeds.
Some 400,000 customers are now signed up to a BT fibre broadband deal, enabling them to access download speeds of up to 40Mb.
In the near future, the capabilities of BT Infinity are set to increase, with some customers set to gain access to ultra-fast 300Mb services.
Another 95,000 customers were added to the fibre platform during Q4, accelerating from 88,000 net additions during the previous quarter.
BT's Chief Executive Ian Livingston said the firm had delivered another quarter of growth in profits and cash flow despite the economic headwinds.
"In the UK, our fibre roll-out has accelerated bringing super-fast broadband within reach of over seven million homes and businesses and we remain the number one broadband retailer with over six million customers," he stated.
"Our fixed-line base has now grown for the last five quarters and our active consumer line loss is at its lowest for five years."
BT is currently investing £2.5 billion upgrading its broadband infrastructure across the UK.