4G coverage in London, Birmingham, Cardiff and Bristol will be covered at launch, with a further 16 set to get the service by the end of the year.
The decision to cover London in its entirety from day one makes it one of the most ambitious rollouts we have seen, and EE is clearly not wasting any time making up lost ground.
The other cities to get the high-speed connectivity are Belfast, Derby, Edinburgh, Glasgow, Hull, Leeds, Liverpool, Manchester, Nottingham, Newcastle, Sheffield and Southampton.
4G mobile technology will mean all of these locations will benefit from improved network access speeds, even indoors.
Speaking at the event, London Mayor Boris Johnson said: “I barely understand it, but information will spout unstoppably from these gizmos.
“It will bring huge advantages to anyone living or working in London.”
Further rollout could prove a boon to rural areas where fixed line broadband speeds are poor.
Fast data connectivity is essential to help businesses grow and become far more mobile, social and flexible and here at Business Matters we have been backing the 4GBritain campaign to bring this faster connectivity to the UK.
Talking about today’s announcement, Matthew Howett, practice leader, regulatory telecoms, at Ovum said: “All eyes will be on the company once the rollout gets under way. For it to be an attractive proposition for consumers it requires a good degree of network coverage, an attractive range of handsets and easy-to-understand pricing. From what we learnt today, EE certainly seems to have done everything right on the first two, but pricing will not be known until the firm launches in a few weeks’ time.