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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David Jones was responding to London's Fire Commissioner who said the term 'fireman' was outdated and should stop being used.
A report published by the Boundary Commission for England details plans to reduce the number of MPs by scrapping 50 constituencies.
Cressida Dick said that around £700m of savings have already been made.