Specialist reinsurance broker Miller has entered a deal to buy specialist reinsurance broker AHJ Holdings for an undisclosed sum.

AHJ Holdings is the parent company of Alwen Hough Johnson and AHJ Europe.

Set up in 1973, AHJ has a workforce of 90 across London and Scandinavia.  

The company specialises in reinsurance within property and casualty and marine and energy sectors, in addition to niche insurance lines.

Miller calls the integration of AHJ “highly complementary” to its reinsurance strategy.

This move follows the company’s previous acquisitions including capital advisory firm 4809 Brokers and the Spanish reinsurance broker Bruzon in 2024.

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Miller expects the acquisition to provide immediate scale in treaty reinsurance and help it benefit from AHJ’s established presence in the Nordic, Caribbean and North American treaty markets.

Miller CEO James Hands said: “The acquisition of AHJ is our most significant investment since returning to independence in 2021 and a major milestone for Miller, significantly accelerating our reinsurance strategy.

“Alongside sharing our commitment to specialism, AHJ is an excellent cultural fit and, like us, their success has been built on a client-first philosophy and desire to develop long-term relationships.

“AHJ will give us an established reinsurance platform from which to drive further growth, including meaningful hiring plans as we seek to attract talent that wants to be part of an independent specialist. We are delighted that Gary and his team share our aspirations, and are very much looking forward to welcoming our new colleagues.”

Macquarie Capital, Herbert Smith Freehills and PWC advised Miller on this transaction, while AHJ received advice from Grant Thornton and Stephenson Harwood.

AHJ CEO Gary Masters said: “In Miller we believe that we have identified the ideal partner, one who will enable us to maintain that which has made AHJ distinct, while presenting us with new opportunities. 

“We are excited to be able to bring new services to our client base, in particular Miller’s facultative and capital advisory capabilities, in addition to the advantage provided by Miller’s market leading position across many specialty insurance lines throughout the London and International markets.”

The transaction is set for completion in the second quarter of 2025, contingent on customary approvals.

Last month, Miller expanded its Asian operations with the establishment of Miller Korea.

This new venture aims to deliver global specialty expertise to the Korean market, leveraging a team of specialist insurance and reinsurance brokers.