BT has announced it has connected the first round of customers to its 330Mbps "G.fast" ultrafast broadband as part of a new trial in the Huntingdon area of Cambridgeshire.
The test, which was first announced in July, will later be extended to Swansea, Gosforth and Newcastle, and is open to all communications providers.
BT Openreach has confirmed it is currently working with communications partners, each of which will then provide services to customers.
A total of 2,000 consumers will be served by the current trial over the course of the next few weeks.
It is already delivering speeds of up to 330Mbps, which is more than ten times the current UK average.
The technology utilises a fast link from a specially equipped cabinet to a distribution point, then uses a noise-cancelling technology between the distribution point and the home.
It means that speed can be boosted without the need for tearing out the copper.
BT claims that if successful, the trials could pave the way for delivering speeds of a few hundred megabits per second to millions of homes across the UK by 2020.
Culture Secretary John Whittingdale said: "The UK already leads Europe when it comes to superfast broadband coverage and speeds, with around 40,000 more homes and businesses getting access every week thanks to the government roll-out.
"We want to stay ahead of the competition and so it’s good to see this continued investment and innovation in the industry."
Joe Garner, CEO of Openreach, added that it is the start of a new chapter in building Britain’s connected future.
He noted: "This is the largest trial of G.fast technology in the world and it builds on the pioneering research of BT’s world-class R&D teams.