Openreach has revealed more than 600,000 premises have been connected as a result of its full-fibre rollout.
The infrastructure body is aiming to roll out fibre-to-the-premises technology to three million premises across the UK by 2020.
Phase one of the scheme involves deploying the technology in nine cities - Bristol, Cardiff, Edinburgh, Exeter, Leeds, Liverpool, London and Manchester.
This will be followed by installations in 40 towns, cities and boroughs throughout the UK.
Kim Mears, Managing Director of Openreach, confirmed that the fibre-to-the-premises network will offer speeds of up to 1Gbps.
"That’s about 24 times faster than the current UK average," she commented.
"This has the potential to completely transform the way people go online, and opens up a world of opportunity."
Ms Mears added that this is also an important step in future-proofing the UK's broadband network and supporting emerging mobile technologies such as 5G.