HDI Global UK & Ireland appoints Marcus Breese as new Head of Cyber Underwriting

Published on March 31, 2025

HDI Global UK and Ireland has announced the appointment of Marcus Breese as Head of Cyber Underwriting, effective April 1st, 2025.

HDI Global logoIn his new role, Breese will report to Antonia Osborne, Director of Underwriting, Corporate, HDI Global UK and Ireland.

Breese joins HDI Global from Arch, where he served as Head of Cyber and Technology Errors & Omissions (E&O).

Prior to that, he spent a year at cyber risk modelling firm Corax and 18 years at Hiscox, where he held various roles specialising in technology and media E&O as a Line Underwriter.

Osborne commented, “Cyber risk continues to dominate the minds of our clients as one of the most important risks facing their operations.

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“Marcus brings a huge amount of expertise to our business and will help deliver on our goal of supporting our clients with a strong, innovative cyber risk value proposition that keeps pace in times of transformation.”

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