- One in ten orbiting satellites could be knocked out for days during a superstorm event
- Any that keep orbiting, could 'age', meaning they would need to be replaced
- GPS signals would be interrupted one to three days after the storm hit as satellite transmissions to the ground are disrupted
- Navigating officers in aircraft and ships would temporarily have to revert to old-fashioned "dead reckoning"
- Energetic particles from the blast could interfere with aircraft electronics
- A superstorm could end large induced currents through the electricity grid network, potentially causing blackouts
- For passengers on high flying aircraft, a superstorm would deliver a radiation dose equivalent to three CT scans, although below harmful levels, astronauts would be at risk
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The PM promises to double to 200,000 the number of homes built under an existing scheme aimed at easing Britain's housing shortage.
The Met Office has weather warnings in place for snow and ice until 10am in the north and west.
The plan, which would effectively strip banks of the benefit of recent corporation tax cuts, forms part of the party's election manifesto.