BT is set to meet its commitment to have 500,000 Wi-Fi hotspots across the capital in time for the London 2012 Olympic and Paralympic Games.
The broadband provider - the official communications services partner of the Games - already has more than 475,000 hotspots in Greater London.
These comprise thousands of independent businesses and homes, plus outdoor hotspots across Westminster.
And with two months until the Olympics get underway, BT is on-course to meet its target of half a million wireless broadband hotspots by the end of July.
"More Wi-Fi access is good news for commuters who have been urged to work flexibly or remotely to ease congestion and keep London moving during the Games," the broadband provider stated.
During the Olympics, BT Wi-Fi will complement 3G networks and allow users to download and upload as much data as they like without fears of exceeding their monthly data allowance.
The firm is installing an extensive, high-density Wi-Fi infrastructure with nearly 1,000 access points across nine Olympic venues, including the Olympic Stadium.
Boris Johnson, the Mayor of London, said: "This is fantastic news for the millions of visitors coming to the capital to enjoy this incredible summer of sport but even better news for London's businesses.
"They will continue to reap the benefits of this boost to the city's ever expanding digital infrastructure long after the Games are over."
Andy Baker, Chief Executive at BT Wi-Fi, said the firm will bring the internet "right to the fingertips of spectators and visitors across London".
"With the UK’s largest Wi-Fi network, BT is proud to be giving users the best-possible experience," he stated.
"BT has a proven track record of delivering the large-scale, reliable communications that London will need this summer."