Prospect Brokers Offices - Northern and Shell Building London


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.

We aim to be the leading driver of innovation in our market and we specialise in finding capacity for hard to place or emerging risks.

Costero Brokers Ltd.  specializes in binding authority, 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.



To be the most innovative and respected independent specialty (re)insurance intermediary globally.


We strive to provide clients with the highest levels of (re)insurance intermediary services and build long term partnerships, based on trust, integrity and innovation.


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

Executive Vice President

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

Nick Murrell

Executive Vice President

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

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 Chairman of the Costero Board.

+44 (20) 8054 9390

Simon Hogg LLB, MRES, BA(Hons)

Chief Operating Officer

+44 (0) 7711 594 606

+44 (0) 20 8051 5151

Jessica Knowles

Operations Manager