David Seeckts, Head of Manufacturing Midlands at Premier Foods said the 511 jobs were going at Birmingham because the firm lost a significant bread contract for 2013 and because of general competition and the nature of the industry.
The Birmingham site opened in 1964. There are 323 production jobs and 188 in distribution.
The plan is for the closure to go ahead by the second quarter of next year.
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It will be largely cloudy through the evening and overnight in the west, with further spells of light rain or drizzle.
It will be cloudy this evening with occasional outbreaks of light rain at times before becoming drier later tonight.
Photos from the scene of a disturbance involving a group of men in Leicester after which a sixteen year old boy died.