It added that all mainline tickets would be accepted on its high speed services.

BBC: Kent snowfall disruption rail and road travel

Earlier this month, Siemens' mobile phone division accepted help from a rival in a bid to speed the arrival of its next generation handsets, which allow users to surf the web, play video games and transmit data at high speeds.

BBC: Siemens to cut 6,500 more jobs

We are not at that point, but the history of this crisis is the speed at which the unimaginable comes to be accepted.

BBC: Stark choices for Europe

While land reform is accepted by all sides as necessary in Zimbabwe, the speed of the programme has often left the land's new occupants without fertiliser, equipment and even seed.

BBC: Zambia gets $50m famine aid

Tornados are rated on several scales for strength based either on wind speed, pressure drop, or damaged caused, but the updated Enhanced Fujita Scale is the presently accepted scale in the United States.

FORBES: Tornados and Nukes -- How Big Can They Get?