Transport for London (TfL) and Boldyn Networks have completed the latest phase of work to expand mobile coverage on the network.
The expansion includes the tunnelled section between Clapham North and Balham, as well as within Oval, Clapham Common, and Clapham South stations.
This means customers can now browse the internet and make calls while travelling.
All four mobile network operators—Three UK, EE, Vodafone, and Virgin Media O2 (VMO2)—are participating in the rollout.
This is part of the Mayor and TfL’s commitment to bring mobile connectivity to the whole of London’s transport network.
The expanding coverage will also give TfL staff better connectivity to pass on information to support the safe and reliable running of the network.
It will also host the new Emergency Services Network (ESN) which, when fully operational, will be able to give first responders immediate access to life-saving data, images, and information in live situations and emergencies on the frontline.
TfL and Boldyn are working to introduce high-speed 4G and 5G mobile coverage across the whole Tube, Docklands Light Railway (DLR), and Elizabeth line network, including on the London Overground Windrush line between Highbury & Islington and New Cross.
Coverage on the Bakerloo line has recently gone live along the tunnelled sections between Piccadilly Circus and Embankment, with further stations along the line, as well as the Piccadilly and Victoria lines, set to get coverage in the coming months.
The Deputy Mayor for Transport, Seb Dance, said: “The introduction of 4G along this stretch of the Northern line means even more Londoners will now be able to stay connected on the Underground ahead of Christmas: reading, streaming or catching up with loved ones.
“This is yet another step towards delivering the Mayor’s commitment to rolling out 4G across the whole Tube network, building a better London for everyone.”
Shashi Verma, Chief Technology Officer at TfL, said: “It’s great that more sections of the Northern line now have mobile coverage for customers to stay connected during the festive period.
“Further sections will be going live early in the new year and we are working hard to bring the benefits of being able to stay in contact while travelling through our city as quickly as possible to the rest of the network.”
The latest Underground stations where mobile coverage is now available include Shepherds Bush, Holland Park, Notting Hill Gate (Central line only), Queensway, Lancaster Gate, Marble Arch, Bond Street (Central and Elizabeth line only), Oxford Circus (Central line only), Tottenham Court Road, Holborn, Chancery Lane, St Pauls, Bank (Central line only), Hampstead, Belsize Park, Chalk Farm, Highgate, Archway, Tufnell Park, Kentish Town (station closed from June 26 due to engineering works, but 4G will still be provided to platforms for passing trains), Camden Town, Mornington Crescent, Euston (Charing Cross Branch), Warren Street (Northern line only), Goodge Street, Tottenham Court Road, Leicester Square, Charing Cross, Oval, Clapham Common, Clapham South, Paddington, Bond Street, Tottenham Court Road, Farringdon, Liverpool Street (Elizabeth line only), Whitechapel, Canary Wharf, Woolwich, Westminster, Waterloo (Jubilee line only), Southwark, London Bridge (Jubilee line only), Bermondsey, Canada Water, Canary Wharf, North Greenwich, Russell Square, Holborn, Covent Garden, Piccadilly Circus, Hyde Park Corner, Piccadilly Circus, and Charing Cross.
TfL encourages customers to report incidents wherever possible on the Underground by texting British Transport Police on 61016 or via the free BTP Railway Guardian app.
Certain mobile service providers may issue a small charge to text 61016.
Customers should always call 999 in an emergency.
Work to deliver mobile coverage across the whole Tube network will continue throughout 2025 and 2026 to fully introduce coverage within stations and tunnels.
This work will be primarily on some sections outside of Central London, sections of the Circle and District line where a number of stations already have limited mobile coverage due to being closer to the surface, as well as where smaller tunnelled sections need to be treated individually.