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Elizabeth Line tunnels now equipped with high-speed mobile coverage

Customers on the Elizabeth line between Liverpool Street and Paddington can now enjoy high-speed 4G and 5G coverage in the tunnels. This advancement follows the introduction of mobile coverage at all Elizabeth line stations earlier this year.

Transport for London (TfL) and Boldyn Networks have extended coverage from the Royal Oak portal near Paddington to Liverpool Street, covering around five miles. Further sections towards Whitechapel will be connected soon, with complete coverage across the Elizabeth line expected by the end of summer.

TfL and Boldyn Networks aim to provide high-speed mobile coverage across the entire Tube, DLR, and Elizabeth line networks, including the London Overground between Highbury & Islington and New Cross. All major mobile operators—Three UK, EE, Vodafone, and Virgin Media O2—are participating in this rollout.


Recent expansions include Hyde Park Corner and Russell Square on the Piccadilly line, with more sections of the Northern, Bakerloo, Piccadilly, and Victoria lines expected to gain coverage shortly. This initiative not only keeps passengers connected but also enhances connectivity for rail and Tube staff, supporting the new Emergency Services Network (ESN), which will provide first responders with vital real-time data during emergencies.

Currently, 36 Tube stations offer mobile coverage in ticket halls, platform areas, and interchanges. By the end of the summer, nearly 70 percent of all Tube stations will have mobile coverage available, significantly improving connectivity for London’s commuters.

Elizabeth Line tunnels now equipped with high-speed mobile coverage Harrow Online
The new station will be part of the Elizabeth Line. Image: David Hawgood

London’s Transport Commissioner, Andy Lord, said: “It’s wonderful to see our programme to introduce high-speed mobile coverage now benefitting customers on the Elizabeth line, the newest part of London’s historic underground network of stations and tunnels.

“This key step in bringing better connectivity to London’s underground stations and tunnels will allow more people travelling around the capital to keep in touch, share photos and make the most of the city, especially as we start to enjoy the summer.”

Billy D’Arcy, CEO of UK & Ireland at Boldyn Networks said: “Following the success of all underground Elizabeth line stations being connected, we’re delighted that TfL customers are now starting to enjoy 4G and 5G coverage in the tunnels. This will benefit a huge number of passengers travelling between Liverpool Street and Paddington, including tourists travelling through central London this summer, as progress continues on the rollout of our new digital infrastructure for London.”


Amir Dawoodbhai, 23, and on the Executive Committee of TfL’s Youth Panel said: “Young Londoners are already some of the most geographically mobile in the country thanks to extensive public transport here in the capital. Mobile coverage on the Elizabeth line and the Tube is a welcome addition to this offering. It enhances perceptions of safety, accessibility and general user-friendliness as young people start to experience London independently for the first time, helping to guide them through what can sometimes feel like a complex transport system.”

Mary McHarg, Union Affairs Officer at University College London and Chair of Trustee Board said: “Getting signal on the Elizabeth line is a game changer. It will massively benefit students at UCL and across London, many of whom commute to campus each day. Most importantly, the ability to make calls and access the internet during journeys across London will help improve students’ safety across the network.”

Michael Solomon Williams, Head of Campaigns at Campaign for Better Transport said: “This is great news for Elizabeth line passengers who will benefit from expanded mobile coverage. Extending coverage across London’s underground network will make it much easier for people to keep connected and help passengers to navigate their sustainable journeys by Tube.”


The project is being implemented by Boldyn Networks, one of the world’s leading shared infrastructure providers, who was awarded a 20-year concession by TfL in June 2021 to deliver high speed, 5G-ready mobile connectivity across the entire London Underground network. Boldyn Networks, formerly BAI Communications, is installing a fibre backbone across the capital to improve connectivity both above and below ground, bringing wide reaching socio-economic benefits to local businesses and communities.

Around 500 people are working overnight across the Tube network to install mobile equipment, with all works needed to be tidied away before the network opens for customers every morning. Once fully delivered, more than 2,000 kilometres of cabling as well as thousands of radios are expected to be installed within tunnels and stations, all of which will be fitted outside of operational hours.

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