What ADA UNDERWRITERS LIMITED does

ADA Underwriters Limited (AdA) is a London-headquartered specialty insurance syndicate founded in May 2023 by Natasha Jodrell (Managing Director), James Grainger (Chief Underwriting Officer), and Paddy Riordan (Director). The company underwrites through Lloyd's Syndicate 2024 under the Probitas Managing Agency, with the syndicate separately capitalised from Probitas's main Syndicate 1492. AdA launched as a Lloyd's Special Purpose Arrangement (SPA) for the 2024 year of account and graduated to full Syndicate status in 2025, with Lloyd's subsequently approving the syndicate for the 2026 year of account.

The company writes a globally diversified portfolio across seven specialty lines: cargo, aviation, project cargo, energy (upstream and midstream), marine and energy liability, ports and terminals, and specie (fine art, jewellers' block, general specie, cash in transit). Underwriting is led by dedicated heads for each product line, supported by an in-house Risk Engineering team and a partnership with Solomon for carbon-efficiency benchmarking of energy clients. A regional underwriting and distribution presence is maintained in Birmingham, Manchester, and London, focused initially on cargo and freight for UK mid-market clients with plans to expand product lines. Captain Adrian McCourt joined as Chief Engineer in early 2025, launching the Weather Watch bulletin service for Atlantic, Caribbean, and Gulf of Mexico storm activity.

AdA generates revenue through insurance premiums collected from policyholders across its specialty lines, with policies underwritten through Lloyd's Syndicate 2024 and typically renewed annually on a subscription-recurring basis. Pricing is quote-based and tailored to individual client risk profiles rather than publicly disclosed. Distribution is broker-led: the firm reaches global and enterprise clients through the Lloyd's market and works with regional brokers in Birmingham, Manchester, and London for mid-market cargo and freight. Claims handling, led by a dedicated Head of Claims, and the Weather Watch content service are positioned as integral components of the product offering rather than separate revenue streams.

Name

ADA UNDERWRITERS LIMITED

Legal name

AdA Underwriters Limited

Website

https://ada-uw.com

Company type

Private

Founded year

2023

Operating status

Operating

Short description

AdA Underwriters is a Lloyd's specialty syndicate underwriting marine, energy, cargo, aviation, liability, and specie insurance globally, with regional teams in London, Manchester, and Birmingham serving brokers and clients across multiple specialty lines.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Insurance Premiums: AdA generates revenue through insurance premiums collected from policyholders across its marine, energy, aviation, and specialty insurance lines. Policies are underwritten through Lloyd's Syndicate 2024 and typically renewed annually.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

ADA Underwriters is a specialty Lloyd's insurance syndicate (Syndicate 2024) operating under the Probitas Managing Agency. The company underwrites marine, energy, aviation, cargo, ports and terminals, specie, and marine & energy liability insurance for clients ranging from regional businesses to multinational corporations, distributing primarily through Lloyd's market brokers with regional teams in London, Manchester, and Birmingham.

Product overview

AdA Underwriters is a specialty Lloyd's insurance syndicate under the Probitas Managing Agency, offering a comprehensive portfolio of marine and specialty insurance products. The company operates through Lloyd's Syndicate 2024 and provides tailored insurance solutions across multiple product lines including Cargo, Aviation, Project Cargo, Energy, Marine & Energy Liability, Ports and Terminals, and Specie. Supporting services include Claims Leadership, Risk Engineering, and Weather Watch. The company has a regional presence with teams based in London, Manchester, and Birmingham.

Differentiator

Problem solved

Functional benefit

Products and services

• Cargo Insurance
• Aviation Insurance
• Project Cargo Insurance
• Energy Insurance
• Marine & Energy Liability Insurance
• Ports and Terminals Insurance
• Specie Insurance
• Regional Marine Cargo & Freight Liability
• Claims Leadership
• Risk Engineering
• Weather Watch Service

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core and supporting.

• Probitas Managing AgencycoreStrategic or Co-development Partner · 1 January 2024AdA operates as Lloyd's Syndicate 2024 under the Probitas Managing Agency. The syndicate is separately capitalised from the main Probitas Syndicate 1492. Probitas manages the underwriting records and is the registered data controller for personal data processed during syndicate business.
• SolomonsupportingTechnology or IntegrationSolomon is a global leader in benchmarking and consulting. AdA works in conjunction with Solomon to rate the carbon efficiency of all energy clients where applicable, supporting the company's focus on helping clients on the path to carbon neutrality.

Scale indicators2 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• Convex Group: Convex is a relatively new specialty insurer with Lloyd's platform writing aviation, marine and energy; comparable to AdA in being a younger specialty entrant building a multi-line Lloyd's book.
• Lancashire Holdings: Lancashire is a Lloyd's-focused specialty insurer with a core book in marine, energy, aviation and property; its class mix and London Market distribution closely mirror AdA's target portfolio.
• Beazley: Beazley is a major Lloyd's-listed specialty insurer writing marine, energy, aviation and political risks; comparable to AdA as a Lloyd's-based specialty syndicate serving brokers across overlapping classes.
• Markel International: Markel International is the London-based specialty division of Markel Group, writing marine, energy, cargo, aviation and specie at Lloyd's; comparable as a multi-line specialty Lloyd's underwriter.
• Fidelis Insurance: Fidelis is a Bermuda-domiciled specialty insurer with significant Lloyd's syndicate exposure across marine, energy, aviation and specie; closely comparable to AdA as a multi-class specialty underwriter.
• Aspen Insurance Holdings: Aspen writes marine, energy, aviation and specialty lines at Lloyd's; comparable to AdA in class mix and London Market broker distribution.
• Hiscox: Hiscox operates Lloyd's syndicates writing marine, energy, aviation and specialty lines; directly comparable to AdA in distribution model (London Market brokers) and class mix.
• MS Amlin: MS Amlin is a Lloyd's-led specialty insurer focused on marine, energy, property and casualty; directly comparable in product portfolio and Lloyd's distribution model.

Broad incumbents

• Munich Re: Munich Re is a global reinsurer and large direct specialty insurer with material marine, aviation and energy capacity; comparable as a broad incumbent with overlapping specialty capability and reinsurance relationships that AdA will interact with.
• Swiss Re: Swiss Re is a global reinsurer and direct specialty writer with large marine, aviation and energy portfolios; comparable as a broad incumbent providing reinsurance support and competing for the same specialty risks.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/adaunderwritersltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles22 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ADA UNDERWRITERS LIMITED