Mars's £190 Million Investment in Historic UK Chocolate Factory: A Commitment to European Manufacturing

Mars Strengthens Commitment to European Manufacturing

Mars Incorporated, renowned for brands such as MM's®, Ben's Original™, and SNICKERS®, has made a significant announcement regarding its operations in the UK. The company will be investing approximately £190 million over the next several years to upgrade its historic chocolate factory located in Slough. This substantial investment aims to enhance production capabilities and ensure the factory operates with cutting-edge technology.

Founded in 1932, the Slough factory has been pivotal to Mars's manufacturing network, producing iconic confectioneries that not only serve the British market but also export to various European countries. In 2025 alone, the facility delivered over 2.7 million kilograms of chocolate to Ireland and more than 12.3 million kilograms to the Netherlands, exemplifying Mars's integral role in the European confectionery market.

The upcoming investment is part of a larger strategy that Mars announced in September 2025, outlining a commitment of £1 billion across the EU. The transformation of the Slough facility into a state-of-the-art production hub will incorporate advanced manufacturing technologies. This includes the integration of robotics, artificial intelligence, and modernized systems to improve efficiency and sustainability.

A focal point of the Slough factory’s upgrade is the implementation of digital twin technology. This innovation leverages AI-driven data analytics to streamline production processes, enhance product consistency, and minimize waste. Additionally, the investment will facilitate workforce development, opening doors to new job opportunities in engineering, automation, and data-driven production strategies. This forward-thinking approach ensures that Mars's employees are equipped with the skills necessary for the future of manufacturing.

Adam Grant, the managing director of Mars Snacking UKI, emphasizes that this investment reflects the company’s confidence in the UK as a hub for manufacturing and innovation. Grant stated, “With a long-term vision, we are ensuring that our operations remain competitive and prepared for the future.” By reinvigorating its commitment to the Slough factory, Mars aims to foster a positive and lasting impact on the local community.

The UK Secretary of State for Business and Trade, Peter Kyle, acknowledged the significance of Mars's investment, viewing it as a testament to the country's strength in manufacturing and innovation. Kyle remarked, “This investment demonstrates that global companies continue to support British talent and industries, maintaining Slough's legacy as a production powerhouse.”

Mars’s recent investment in the UK aligns with its broader strategy to bolster its manufacturing presence across Europe. Over the past 90 years, Mars has operated 24 factories in ten EU nations, employing approximately 25,700 individuals while exporting products to over 100 markets, solidifying Europe as a crucial region for its global success.

Other European markets have also seen ongoing improvements. Mars has invested nearly €500 million over five years in its factories in France to modernize production and accelerate environmental initiatives. In the Netherlands, annual investments between €28 and €30 million continue to support the Veghel factory, which is a key player in chocolate production. Likewise, in Poland, Mars plans to invest about €250 million through 2027, which will significantly enhance its operations at the Janaszówek chocolate factory.

The global manufacturing strategy of Mars centers on developing modern and resilient production capabilities. As part of this long-term plan, the company has outlined intentions to invest €1 billion in the EU and an additional $2 billion in manufacturing across the United States by 2026. This strategy is bolstered by the recent acquisition of Kellanova, combining two iconic portfolios to drive growth and innovation in the snack food industry.

Conclusion

The ongoing evolution of Mars's manufacturing sector showcases a commitment to modern technology, sustainability, and workforce development, all while honoring the traditions that have made its products beloved around the world. With a renewed investment in the Slough factory, Mars not only participates in the economic vitality of the UK but also elevates the standards for confectionery production for years to come.