Costero Brokers Ltd. is an independent, dynamic and entrepreneurial insurance and reinsurance Lloyd’s of London broker with a team that brings a wealth of experience, expertise and enthusiasm. By partnering with like-minded clients throughout the world, we present London underwriters with true partnership opportunities for the long term. This approach provides our clients with stability and creativity for the ultimate benefit of their end clients.

Rather than being all things to all people, we strive to build out specific areas of capability with great team depth in terms of brokerage, claims and overall servicing. Our aim is to be the leading driver of innovation in our market. We are geared to specialise in finding capacity for hard to place or emerging risks.

Costero Brokers Ltd. enjoys long standing expertise in binding authority, open market, reinsurance and alternative risk transfer business placed into Lloyd’s of London, European and international company markets.

Whether our clients are Brokers, Coverholders (MGAs), Captives or Insurers, we are able to draw upon our steadfast relationships with underwriters and passion for “finding a way” to deliver effective, tailor-made solutions to their insurance and reinsurance needs.


We have a dedicated, dynamic team of broking, technical and claims professionals offering expert service across a range of product classes and disciplines.
Jamie Webb – Managing Director, Prospect Insurance Brokers

Jamie Webb

Managing Director

After obtaining his business studies degree, Jamie joined Rattner Mackenzie in 2005 who at the time were owned by Houston Casualty Company. He then moved to the Bermuda office where he served nearly three years learning about the global reinsurance market and helping to place HCCs treaty business. He then spent some time in Rattner’s New York office where he was employed principally to build the business of a major coverholder. Jamie left Rattner Mackenzie to form Prospect Brokers in 2010 and was designated Insurance Day’s Young Broker of the Year in 2012 in recognition of his work at Prospect. Jamie was appointed Managing Director of Prospect in January 2015.

+44 (0) 7540 969 940

+44 (0) 20 8051 5150


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Nick Murrell

Managing Director

Nick has worked at Costero Brokers since its inception in August 2017. Nick has over 36 years’ experience in the London insurance industry, specializing in property, business interruption and contingent business interruption. Nick’s client handling and placement experience covers a broad range of industry sectors, which he has supported through program design, bespoke policy wordings, capacity management, claims management, and alternative structures, including captive design and establishment. While primarily focused on the US markets, Nick has experience in Caribbean, LATAM, Africa, MEA, APAC and Europe business.

+44 (0)7980 982 585

+44 (0) 207 337 6561


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John Tallarida


John began his insurance career in 1986 and has enjoyed a long career on both the underwriting and brokerage side of the insurance business. He was fortunate to begin trading in the London marketplace in 1994 and immediately appreciated the broad capabilities of Lloyds of London.

John serves on the board of various insurance organizations and companies and currently serves as Director of the Costero Board.

+44 (20) 8054 9390