Global confectionary brand Mars Incorporated has unveiled a £190 million investment in its Slough factory, which it said will transform the location into a manufacturing hub.
Mars, which owns brand such as Mars®, Galaxy® and Snickers®, as well as M&MS®, Ben’s Original™ and Pringles®, said the investment had started in 2023 and will continue through to 2028. It will aim to expand its manufacturing facilities, digital capabilities, sustainability initiatives and workforce upskilling.
Of the £190 million total since 2023, £32 million is forward looking and planned for 2027-2028. This builds on more than £118 million in UK capital investment across its Snacking, Food and Petcare businesses in 2024–25.
The Slough site produces chocolates for distribution in the UK, Ireland and the Netherlands, and Mars said it remains a “major local employer”, employing more than 1,850 people.
Adam Grant, general manager at Mars Snacking UKI, said: “This investment reflects our confidence in the UK as a hub to manufacture and innovate. In taking a long-term view, we are ensuring our operations remain world-class, competitive and fit for the future.
“Our Slough factory is deeply rooted in our heritage, and as a proud family-owned business, we are committed to investing in a future that creates lasting, positive impact for the communities in which we operate.”
Mars will deploy digital twin technology to the Slough factory, using AI-driven data to work to optimise production. The company said this would enable precise process control, consistency and uniformity across product lines, while enabling real-time decision-making on the factory floor and reducing waste.
“This £195 million investment is a clear vote of confidence in our local economy and workforce.”
Business and Trade Secretary, Peter Kyle, stated: “This £190 million investment by Mars is a strong vote of confidence in the UK as a place to manufacture and innovate. For nearly a century, the Slough factory has produced some of the world’s best‑loved brands, and this investment shows global businesses continuing to back British skills, workers and industry.”
Tan Dhesi MP added: “Mars has been part of our community in Slough for almost a century and remains one of our major local employers. It also plays an important role beyond the factory gates – supporting community organisations, volunteering, and helping young people into apprenticeships.
“This £195 million investment is a clear vote of confidence in our local economy and workforce. I welcome the long-term commitment Mars continues to show to our community.”
