BT's fibre broadband network now passes two-thirds of UK premises, the firm has revealed.
Super-fast broadband is accessible to 19 million homes and businesses - the target BT originally set itself for the end of 2015.
As such, BT has achieved this coverage goal 21 months earlier than planned.
The majority of BT's fibre footprint has been enabled under its commercial plan, with the remainder deployed in partnership with the public sector.
BT claims the hard work and commitment of its engineering and planning teams has supported one of the fastest broadband rollouts anywhere in the world.
"UK fibre availability currently stands at 73 per cent of premises when all networks are taken into account," BT noted.
"This widespread availability compares with just 20 to 25 per cent for France."
BT expects its fibre footprint to grow "considerably" in the year ahead, as it continues its commercial roll out and also deploys fibre in rural areas using Broadband Delivery UK funding.
To date, BT has agreed 44 partnerships with local authorities, and 630,000 premises have already been passed under the programme.
Gavin Patterson, Chief Executive at BT, commented that fibre broadband "is the future".
"BT has invested billions of pounds to ensure as many people as possible can benefit," he stated.
"The early achievement of this milestone marks the culmination of several years of hard work by our engineers and planners."
He said "great progress" has been made, but BT still has plenty of work to do to improve connectivity nationwide.
"We need to ensure as many people as possible have access to fibre and that is why our engineering teams are working hard to extend the digital superhighway into rural areas," Mr Patterson stated.