200 jobs are to be cut at Cadbury's factory in Birmingham as part of a deal that will see £75m (€97m) being invested in new production lines.

John Cadbury opened his first shop on Bull Street in Birmingham in 1824 - five years later he opened the Bournville plant four miles outside of Birmingham's city center. It lends its name to the company's dark chocolate products.

Owners, Mondelez International confirmed the plans after agreeing a deal with unions. The company will offer 200 voluntary redundancies over the next two years.

Trade union Unite has said that there will be no compulsory redundancies.

About 900 people currently work at the factory which makes a number of the company's most popular products including Diarymilk bars, Wispas and Creme Eggs.

Mondelez has said that these cuts are necessary to make Bournville more competitive, and to secure the long-term future of the operation.

Cadbury merged with drinks firm Schweppes in 1969. In 2010 shareholders accepted a volatile takeover by American food-giant Kraft.

In 2012 Kraft split into two entities, the US grocery operation is still called Kraft - while its main confectionery brands now come under the Mondelez International banner.