Police has considered suspension of London's mobile network for security reasons, but had ruled it out.
Although, the city was sent into panic and fear, the emergency services response was outstanding and transport operators were running an almost normal service on most tube lines - although there were less commuters in the city today with most people opting to work from home.
Three-hundred people were admitted to hospital, of which about 80 remain after emergency surgery or being too badly burned to return home.
A claim on a website by the Secret Organisation Group of al-Qaeda Europe is now being take seriously. Scotland Yard have confirmed that seven people died in the Liverpool Street explosion and another seven at Edgeware road. At least 21 lost their lives in the King's Cross blasts.