Kraft Foods, which acquired British confectionary company over a year ago, will invest £50 million (AU$76 million) into boosting production, but also plans to slash 200 jobs.
The American snack food company will make the changes to Cadbury’s English operations over the next two years.
The investment figure will be spread amongst factories in Sheffield, Bournville, Chirk and Marlbrook.
The Sheffield investment, will introduce production of Oreo and BelVita biscuits for the first time in the UK, creating 20 jobs.
Other projects that included in the upgrades will be upgrading infrastructure, accelerating production, reducing waste and boosting energy-efficiency.
Kraft manufacturing director of UK chocolate Neil Chapman said that the company’s’ wants the Bournville, Chirk and Marlbrook plants to be key operations for British Food Manufacturing and Kraft Foods.
"We continue to invest in our people and facilities, so we can increase productivity and transform our business," he said.
The company has also announced plans to slash 200 jobs at its Bournville, Chirk and Marlbrook sites in over two years from March next year.
When Kraft acquired Cadbury, it promised no more plant closures or compulsory redundancies, but that commitment expired March 2012.