BT has signed up the 15 millionth broadband customer to its internet infrastructure, it has been reported.

The technology, which was launched a decade ago, is now reported to have been adopted by three-quarters of households and businesses in the UK.

BT says it has been registering an average of 5,000 new customers per day since entering the market in 2002.

"Broadband Britain has been a success story with widespread availability, low prices and high take-up," said Olivia Garfield, Strategy Director at BT.

"BT is now investing a further £2.5 billion to roll out fibre broadband to two-thirds of the UK. This will help the UK climb the league tables for speeds, one of the few areas in which we don't lead the world."

The internet service provider recently extended its current three months free broadband deal until October 2010.