Snow, ice wreak havoc in Britain
London - Schools are shut and travellers face air, rail and road delays as a band of snow and icy weather sweeps Britain.
Up to 10cm of snow is forecast in some parts of the country on Tuesday as the bad weather moves south.
Many schools are closed in Scotland, and train services between London and the north are disrupted.
Snow shut the runway at Manchester Airport in northwest England overnight, and budget carrier easyJet cancelled several flights from London's Luton airport.
This winter has been the coldest for years, driving a surge in demand for heating fuel. Authorities on Monday urged power suppliers to switch temporarily from gas to other fuels such as coal. The measure, known as a gas balancing alert, has only been used once before, in March 2006.