O2 is extending its public wireless broadband network to cover the business and shopping districts at Canary Wharf.
The mobile broadband provider is pledging to offer "fast, reliable and simple" Wi-Fi services in the area by the end of summer 2013.
Gavin Franks, Managing Director for O2 Wi-Fi, described the deal as "ground-breaking".
"[It] builds on the successful deployment of Wi-Fi across central London and will see us deliver high-quality, free connectivity to the UK’s busiest business district," he stated.
"We understand that access to free public Wi-Fi is becoming a right, rather than a privilege, and nowhere is the demand greater than in Canary Wharf where big business deals are being struck every day, often away from the office and on the move."
Mr Franks said that, additionally, O2 is offering "a unique platform" for brands and advertisers to engage and deepen the relationship with Wi-Fi users.
He explained that hundreds of thousands of visitors and workers pass through Canary Wharf each week, meaning there is a large target audience.
The news comes after O2 successfully launched free wireless broadband services across the boroughs of Westminster, and Kensington and Chelsea in 2012.