Details of a major shake-up in Greggs’ manufacturing and distribution network have emerged over the past week.

In a move unions fear may cost hundreds of jobs – particularly in bakery production roles – the business is transforming one bakery into a distribution centre, closing another and changing the work carried out at other sites.

The activity is the next phase of a five-year, £100m investment in supply chain announced in March last year as the business prepares to expand its chain of stores from around 1,800 today to more than 2,000 in the future.

Greggs is creating ‘centres of excellence’ that will be focused on distribution and/or production of a specific type of product. Improvements in manufacturing efficiency are expected to see bakery production roles hit harder by job losses than those in distribution.

Below is an interactive map of changes that have been made to the supply chain since Gregg’s supply chain announcement last March.

Click on a point on the map for information about that production or distribution site.