Customers travelling through Oxford Circus and Tottenham Court Road stations can now get coverage within the ticket halls, on the Central line platforms and in the tunnel connecting the two stations.

The Northern line platforms at Tottenham Court Road also get coverage for the first time.

All four mobile network operators – Three UK, EE, Vodafone and O2 – are supported, and the roll-out is set to continue across some of London’s busiest locations in coming weeks

Transport for London awarded a contract to BAI Communications in 2021 to build out the infrastructure needed to bring mobile networks underground.

Uninterrupted mobile coverage was first introduced on the eastern half of the Jubilee line in 2020 ahead of plans to bring it to the rest of the network by the middle of this decade.

The Elizabeth line is next on track to get 4G coverage from the end of this year.

A signal is provided along tunnels using cables known as ‘leaky feeders’ that comprise...