Mobile operator EE says its 4G service is now available in a further nine towns and cities across the UK, bringing the total to 37 since the launch of the UK's first 4G network last year.
This week 4G is being switched on in Barnsley, Chorley, Coventry, Newport, Preston, Rotherham, Telford, Walsall and Watford, with EE claiming its 4G network can now reach 45 percent of the UK population.
By this summer, EE said, the network will be available in at least 72 towns and cities, as well as much of the suburban and rural areas that surround them, "reaching well over half of people in the UK".
EE, along with the other major mobile operators, spent a total of £2.3bn on new mobile spectrum in the recent Ofcom 4G auction, which will allow them to roll out expanded or brand new 4G mobile networks.
EE was given permission by Ofcom to launch the UK's first 4G service using radio spectrum it acquired in the 2000 Ofcom 3G spectrum auction.
Olaf Swantee, CEO at EE, said: "We're setting the pace for the delivery of 4G in the UK and it's a great achievement for our engineering teams to be able to launch in another nine towns this month, enabling more and more consumers and businesses to take advantage of superfast mobile internet."