Heavy snow brings the UK to a hault

Heavy snow has fallen across large parts of the UK, disrupting travel and closing thousands of schools. South-east England has the worst snow it has seen for 18 years, causing all London buses stop running. More snow is expected and an extreme weather warning has been issued for England, Wales and parts of eastern Scotland. Air travel has been badly affected. All flights at Heathrow Airport near London have been cancelled until 1700 GMT. Earlier a plane slipped off a taxiway at Heathrow due to the snow and icy conditions. London City, Luton and Southampton airports are closed. Norwich and Leeds Bradford airports have reopened. Gatwick is open, although fewer aircraft are able to take off. On the roads, motorists were being warned of dangerous driving conditions. There have been a string of accidents on many motorways and A roads, causing road closures, long delays and vehicles to become stranded.