London Victoria, London Bridge, and Clapham Junction to get upgraded mobile coverage
Key Points
- Short one line each - why are we regressign here>11:31Claude responded: Brighton Main Line: O2 joins Cellnex's neutral host project to roll out 5G and improved mobile coverage across the route.Brighton Main Line: O2 joins Cellnex's neutral host project to roll out 5G and improved mobile coverage across the route.
- London stations: Victoria, London Bridge and Clapham Junction get enhanced indoor coverage; the three handle ~19% of capital-bound traffic from outside Greater London.
- Route: 108km corridor linking London, Gatwick and the South Coast, serving 300,000 weekday passengers; coverage will reach 99% once fully activated.
- Rollout: Phased over the coming months under O2's £700m Mobile Transformation Plan.
- Background: Built with Network Rail under a 25-year contract awarded to Cellnex in 2021, tackling historical "not-spots".
O2 has signed an agreement to join Cellnex’s connectivity project on the Brighton Main Line, paving the way for enhanced mobile coverage at three of London’s busiest stations and across one of the country’s busiest commuter routes.
Under the deal, O2 will access Cellnex UK’s neutral host infrastructure to roll out high-speed mobile connectivity, including 5G, to customers along the entire 108km corridor over the coming months.
London Victoria, London Bridge and Clapham Junction are among the stations set to benefit, with indoor coverage solutions being deployed to improve connection at all three.
The Brighton Main Line links London, Gatwick Airport and the South Coast, serving more than 300,000 passengers every weekday and accommodating 1,700 daily train movements.
Around 50,000 of those passengers are travellers to and from Gatwick, the UK’s second busiest airport. The three London stations alone account for roughly 19% of railway passenger traffic to and from the capital from outside the Greater London area.
The infrastructure was developed in partnership with Network Rail under a 25-year contract awarded to Cellnex in 2021.
The route has historically been challenged by deep cuttings, long tunnels and Victorian-era station infrastructure, leaving passengers with frequent “not-spots”. Once fully activated, the shared infrastructure will deliver coverage across 99% of the route.
Steve Cray, managing director of Cellnex UK, said regular passengers would recognise the frustration of losing signal mid-conversation or facing buffering videos throughout a journey.
He said the collaboration represented one of the most significant end-to-end telecommunications deployments on British railways to date.
As a neutral host provider, Cellnex designed and built the infrastructure to allow all UK mobile network operators to access shared connectivity, reducing capital investment and lowering cost per megabyte. The company is now working to expand operator participation along the route.
For O2 customers, the agreement marks the start of a phased rollout, with coverage improvements brought live in stages over the coming months.
Professor Robert Joyce, Director of Mobile Access Engineering at O2, said the move formed part of the operator’s £700 million Mobile Transformation Plan, focused on reliable connectivity in the moments that matter most.
The three-year build programme has involved more than 129,000 working hours and over 11,000 worker entries on the line side and at stations.
The infrastructure includes 130km of high-capacity fibre, four Base Station Hotels to host operator equipment, 39 Distributed Antenna Systems within tunnels and trackside, dedicated station systems at the three London stations, and 16 macro sites along the route.
