BT has revealed that it now provides 15 million homes and small businesses with broadband connections, via both its own ISP and other ISPs that use its network.
The communications provider, which hit the milestone earlier this month, said it has gained 14.8 million customers since August 2002, when it was providing just 200,000 homes and businesses with broadband connections.
BT said this equates to more than 5,000 new broadband connections a day.
Olivia Garfield, BT strategy director said: "Broadband Britain has been a success story with widespread availability, low prices and high take up."
"People were sceptical when BT backed broadband in 2002 but the figures speak for themselves."
Combining BT and Virgin Media's broadband customers together means 19 million, or 71 percent of UK households, now have a broadband connection, compared to just 35 percent in 2005.
Furthermore, Ofcom says 99 percent of British homes have access to broadband connections, which is more than France, Germany and Italy.
"The story doesn't end here as BT is now investing a further £2.5bn 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".