Mark Birrell

Mark Birrell

Chief Executive Officer

Mark has over 35 years' experience within the insurance industry. After 20 years in the Lloyd’s broking community, Mark co-founded Wildnet Group with Benfield.

In April 2004, he led Wildnet’s MBO before stepping down from his CEO role in April, 2013.

Mark joined Castel in July 2013 and has overseen the successful launch of the business and the creation of its first underwriting cells.

Mark was elected to the Board of the Managing General Agents Association (MGAA) in February, 2016.

In his spare time, Mark enjoys running, cycling and sailing.


James Nugent

James Nugent

Chief Underwriting Officer

James has over 35 years' experience in the Lloyd’s insurance market. The last 26 years were spent at Amlin, where he was most recently Global Head of Underwriting Performance. Prior to establishing the underwriting management framework within Amlin, James was the Deputy Underwriter for FC Bowring and Others with responsibility for the direct marine account.

James joined Castel in July 2015 as Chief Underwriting Officer and is responsible for establishing an underwriting governance and performance control framework.

Outside of work, James spends most of his time with his six children supporting them in numerous sporting activities.


Roland Hill

Chief Financial Officer

Roland is Castel’s Chief Financial officer and his responsibilities include all financial reporting, business planning and treasury for Castel and its cells.

Roland qualified as a chartered accountant with Littlejohn Frazer (now PKF Littlejohn) before moving into the insurance industry. In 2012, he joined the Barbican Insurance Group as the Group’s financial controller before taking up the role of Finance Director for Castel and Barbican’s other intermediary companies in 2014. In 2016 Roland joined Castel’s board of directors.

Outside of work Roland enjoys running, cycling and following Welsh rugby.


You are currently offline. Some pages or content may fail to load.