Food giant Kraft has been accused of going back on its word to keep open a Cadbury factory, after union officials said its closure was going ahead, the BBC reports.

Kraft plans to follow Cadbury’s plans, made before the takeover and off shore its chocolate production to Poland.

The closure, which is expected, before 2011 will result in up to 400 employees jobless.

“The ink is barely dry on the takeover and a promise made to the Cadbury workers has been broken. If the rumours now circulating are to be believed, Somerdale looks set to be the first casualty of Kraft’s ownership," said national officer Jennie Formby.