Castel appoints Mark Sambridge to new binding authority management role

20 July 2016

20 July 2016 – Castel Underwriting Agencies Limited (Castel), the club-style MGA formation platform, has appointed Mark Sambridge as binding authority manager.

In this newly created role, Mark will also be responsible for the development, management and governance of all Castel’s binding authority arrangements. This includes the development and ongoing monitoring of the firm’s binding authority control framework, along with regulatory and coverholder compliance requirements.

In addition, Mark will support new underwriting cells joining the Castel MGA formation platform in establishing frameworks and guidelines as well as overseeing the formation and management of binding authorities with capacity providers at Lloyd’s and in the London market. 

Mark joins Castel from JMD Specialist Insurance Services, a part of R&Q Investment Holdings group, where he was the binding authority manager and facilities credit control manager. He has 27 years of experience in the Lloyd’s market covering reinsurance credit control and claims, and technology management roles.

Mark Birrell, chief executive officer of Castel, comments: “Mark’s appointment is in direct response to the continued success and growth of our MGA formation platform. He brings

in-depth knowledge and experience of successfully managing binding authorities and coverholder arrangements. This new role will form an integral part of our business, ensuring the smooth operation of all aspects of the binding authority process.”



Castel, MGA, Mark Sambridge, Binding Authority, Underwriting

For further information, please contact:

Alex Wise, Concise PR Mobile:  +44 (0) 7710 665 615

 Tel:  +44 (0) 207 100 3960


Notes to editorscultative Acceps is a Division of Castel Underwriting Agencies Limited

Photography – Mark Sambridge, binding authority manager, Castel Underwriting Agencies


Castel Underwriting Agencies Limited, a member of the Barbican Insurance Group of companies, is a managing general agent (MGA) and club-style MGA formation platform focused on achieving success and driving innovation through collaboration.  It provides experienced and entrepreneurial underwriters with stable capacity and a fast-track route to creating their own businesses.

Castel underwriting cells are:

·  Altitude Risk Partners, which underwrites airlines, aerospace manufacturing products, general aviation, war and space business;

·  Medical & Commercial International (MCI) which writes general medical and pharmaceutical liability business on an international basis.

·  Newbridge which writes a political violence portfolio focused on emerging markets - MENA, Sub-Saharan Africa, Latin and South America and Asia regions and;

·  One Facultative Acceptances which underwrites property and engineering facultative reinsurance portfolios for risks located in Africa

Castel is authorised and regulated by the Financial Conduct Authority.

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