Sigma Advanced Systems acquires UK’s Nasmyth Group in Rs. 213-crore deal, eyes global aerospace expansion

Hyderabad, January 14. Hyderabad-based Sigma Advanced Systems has acquired the UK’s Nasmyth Group, a leading aerospace and defence precision engineering company, in a Rs. 213-crore ($23.6 million) transaction that marks a major step in building a globally integrated manufacturing platform.

As part of the deal, Sigma will also invest an additional Rs. 450 crore to expand capacity, strengthen engineering capabilities and scale up production across its India and overseas operations. The acquisition gives Sigma an immediate foothold in the UK and European aerospace markets while significantly enhancing its access to long-term contracts with global original equipment manufacturers (OEMs).

Nasmyth, formed as a group in 2003 with operating roots going back nearly 75 years, is a Tier-1 supplier to some of the world’s leading aerospace and defence OEMs. Its capabilities include complex machining, fabrication, systems integration and advanced metal treatments. The company is known for its strong engineering depth and holds multiple NADCAP accreditations, enabling it to undertake safety-critical, high-complexity work in-house.

Sigma, on the other hand, brings a large and cost-efficient manufacturing base in India, developed over decades, along with growing programme-level partnerships with global aerospace and defence customers. By combining these strengths, the two companies aim to bid for larger, more complex and higher-value global contracts.

The deal gives Sigma direct access to Nasmyth’s long-standing customer relationships and participation in major aerospace programmes across the UK and Europe. Under the new structure, Nasmyth will continue to operate under its existing leadership team, ensuring continuity for customers and employees, while Sigma will provide group-level support in areas such as engineering services, R&D, product development and financial planning. Programme management and customer engagement will remain close to Western OEMs, while large-scale manufacturing and engineering execution will increasingly be driven from Sigma’s Indian facilities.

“This acquisition marks a defining step in Sigma’s journey,” said Sunil Kalidindi, CEO of Sigma Advanced Systems. “Nasmyth brings deep engineering expertise, decades of trust with leading OEMs and long-term contracts across key Western markets. Together, we are creating a stronger platform that enhances both capability and scale, allowing us to support global aerospace and defence customers with greater resilience and execution certainty.”

John Rooney, CEO of Nasmyth Group, said joining Sigma would support the company’s next phase of growth.

“Sigma’s long-term vision and global manufacturing depth give us the stability needed to support complex, mission-critical aerospace and defence programmes, while preserving the engineering culture and customer focus that have defined Nasmyth for over seventy years,” he said.

The acquisition comes at a time when global aerospace and defence OEMs are increasingly shifting sourcing and manufacturing to India. Nasmyth’s long experience within European supply chains – including deep familiarity with stringent quality systems, special process controls and long-cycle programme governance – brings capabilities that are still limited within India’s domestic aerospace ecosystem.

By integrating Nasmyth’s advanced manufacturing skills, including precision machining of superalloys and aerospace-grade fabrication, into its Indian operations, Sigma aims to significantly shorten the time required to scale up high-criticality aerospace and defence production.

The transaction is a cornerstone of Sigma’s international growth strategy, which focuses on acquiring differentiated, aerospace-grade capabilities rather than relying only on organic expansion. Together, Sigma Advanced Systems and Nasmyth are positioning themselves as a globally integrated, India-linked aerospace and defence manufacturing platform, designed to meet the evolving needs of leading global OEMs.