Energy security questioned as National Grid cuts off gas to factories

Severe weather and creaking power infrastructure lead to first tangible sign that fears over energy shortages are translating into supply disruption.

Vauxhall's car plant at Ellesmere Port and British Sugar's refineries at Bury St Edmunds and Newark are among nearly 100 factories that have had their energy supplies cut as Britain threatens to lurch from whiteout to blackout.

The National Grid has told British Gas and other power suppliers to cut or reduce their power to major corporate customers in a bid to preserve gas for domestic households as extreme weather caused a surge in demand.