Premier Foods is set to close two factories in King's Lynn, Norfolk, and Ashford, Kent, with the loss of 450 jobs.

Premier Foods inherited the sites when it acquired the UK and Ireland businesses of Campbell Soup Company in August last year. The King's Lynn site will close in December, while the Ashford site will shut in May 2008.

Meanwhile, Premier has acquired Irish preserves supplier Chivers Ireland for an undisclosed sum.