The sweet bakery and dessert producer is upgrading its equipment, building extensions, infrastructure and facilities development.
The investment will “pave the way for future growth”, according to the business.
Modification of the bakery is now underway and completion is scheduled by early this autumn.
Haydens Bakery’s md John Larsen said: “We continue to ‘bake the world a better place’ with our sweetly satisfying goodies and we now approach another milestone in our journey.
‘Good things come to those who bake’
“As they say ‘good things come to those who bake’, so we’re extremely excited to commence discussions about the major multi-million pound redevelopment across the Haydens Devizes Bakery.”
The investment was marked at the bakery last Friday (April 21) by the Haydens executive team, together with group chairman of parent business Real Good Food Pieter Totté and Claire Perry, Conservative MP for Devizes.
Established 40 years ago, the bakery employs 550 staff manufacturing 70 products, which its supplies to national food retailers and coffee shops. Customers included Morrisons, Waitrose, Marks & Spencer, Costa Coffee, Aldi, Caffe Nero and the foodservice market.
Owned by Real Good Food, Haydens Bakery’s product range included: Danish, sweet buns, tarts, pies, crumbles, yum yums and doughnuts.