German propulsion specialist RENK Group has entered into a binding agreement to acquire David Brown Defence, the Huddersfield-based manufacturer of gearboxes for the Type 26 frigate and other major naval programmes, from private equity firm Stellex Capital Management, the UK Defence Journal understands.
The transaction, announced in London on 3 July, gives the Augsburg-headquartered group access to what it describes as high-value naval programmes across the Five Eyes nations. David Brown Defence supplies main propulsion transmission systems for the Global Combat Ship family, covering up to 34 vessels across the Royal Navy’s Type 26 frigates, Australia’s Hunter class frigates and Canada’s River class destroyers.
The company carries an order backlog and pipeline worth over £700 million for the period from 2026 to 2030, according to RENK, which states the extended lifecycle of the programmes also creates sustainable growth opportunities in the aftermarket business.
“With the acquisition of David Brown Defence, we are continuing our strategy of strengthening our leadership position in the defense sector through targeted M&A activities,” said Dr. Alexander Sagel, CEO of RENK Group AG, as quoted in the press release. “David Brown Defence provides us with access to the Five Eyes countries, strengthens our long-term access to high-value naval programs and further expands our aftermarket business. At the same time, we are broadening our existing product portfolio and technical expertise by adding submarine propulsion system technology. As a European partner, we have made a long-term commitment to Huddersfield and the UK defense industry and are delighted to be welcoming the team at David Brown Defence into the RENK family.”
The deal drew endorsement from the UK’s National Armaments Director, Rupert Pearce, who was appointed to the role in October 2025. “RENK Group’s acquisition of David Brown Defence is a strong endorsement of the UK’s industrial base and an important investment in a company whose power transmission and gearbox technologies underpin some of our naval and land defense platforms,” he said, as quoted in the press release. “By bringing together DBD’s heritage and expertise with RENK’s global scale and engineering capability, this deal will help strengthen our supply-chain resilience, protect skilled jobs, and ensure UK Armed Forces get the capabilities they need.”
David Brown Defence employs around 530 people and has over 100 years of experience developing and manufacturing transmission systems for naval and land-based defence systems. Its portfolio spans three segments. In the marine surface segment it is a certified supplier to the Global Combat Ship programmes, while in the sub-surface segment RENK gains what it describes as unique expertise in low-noise and low-vibration propulsion technology for submarines, which the group states will form the technological basis for the next generation of submarine platforms.
The acquisition also expands RENK’s land defence portfolio to include UK programmes such as Challenger 2 and Boxer, adding to the group’s existing armoured vehicle transmission business.
RENK, which generated revenue of approximately EUR 1.4 billion in fiscal year 2025, has been listed on the Frankfurt Stock Exchange since February 2024 and joined the MDAX index in March 2025. The company frames the purchase as the next step in its consolidation of the international defence transmission market, with synergies expected at operational and technological level through joint programme participation.
The transaction is subject to standard regulatory clearances and is expected to complete in the fourth quarter of 2026. Commercial terms have not been disclosed. Barclays served as financial advisor and Linklaters as legal advisor to RENK, according to the press release.
Were there no British companies willing to buy? This would seem like a no-brainer for BAE unless they are continuing down the path of selling software and components rather than physical systems.
Bad news for British industry . While German state using private companies they subsidise are gaining a strategic foothold in shipbuilding. The uk government us so brain dead is allowing the exact opposite despite all the hot air of supporting British Industry .
is this wise?
As stellex capital managment is an American compamy, does it make any difference it’s still foreign owned. In the current situation regards to the relationship with the USA, particularly in defence matters. It might even be safer in German ownership.