Ceremony host Lauren Laverne introduced Blake as James Blunt at the Roundhouse last night, but later apologised on twitter for her slip-up.
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Some platforms have been taken out of service with disruption expected to continue until the end of the day.
The Met Office has extended its weather warnings for snow and ice to cover vast swathes of the country, including London and the South East.
A total of 270,000 documents is expected to be submitted to the inquiry.