Nexus Underwriting Management

What Nexus Underwriting Management does

Nexus Underwriting Management is the largest independent specialty Managing General Agent (MGA) in the London market, founded in 2008 by a group of experienced underwriters and now operating as a wholly-owned subsidiary of Kentro Capital Limited, which was acquired by Brown & Brown, Inc. (NYSE: BRO) in October 2023. The group serves 1.1 million insureds across 12 countries spanning Europe, the Americas, the Middle East, and Asia Pacific, with a headcount of approximately 300-350 specialists. Its core business is underwriting complex, hard-to-place risks that mainstream carriers avoid, across Financial Lines (Management and Professional Liability, Small Business Protect, Financial Services for asset managers), Reinsurance (A&H Reinsurance, Structured Solutions), Specialty Casualty (Product Recall and Contamination, Alternative Risk Transfer), Cyber Liability, Marine, Trade Credit and Surety, and Fine Art.

The group distributes exclusively through wholesale broker networks under a delegated-authority MGA model, with capacity provided by 50+ global underwriting partners including Lloyd's syndicates, Axa, Beazley, and Hiscox. Proprietary digital infrastructure includes the Nexus RiskWrite Portal, Nexus Approach, Millstream Online, and EBA Cauzioni platforms, complemented by an in-house claims team. Coverage caps include $5m for cyber (Nexus Cyber Policy), $12.5m for product recall, and policies for financial services firms with up to $3.0bn AUM, healthcare and cyber clients with up to $500m revenue, and management/professional liability coverage for companies with up to $350m revenue.

Revenue mechanics combine MGA commission on premiums placed with capacity providers, administrative fees, and, for some lines, premium retention between premiums collected and claims paid. The group has grown both organically and via 18 completed acquisitions, with 10 deals closing in 2025 including Sure Insurance Services, Evolve MGA, Arma Underwriting, and Spectrum Risk Management. Gross Written Premium stands at $550m with a 2025 projection of $650m, and the company has earned recognition including the London Stock Exchange's "1000 Companies to Inspire Britain" (2018, 2020), Sunday Times Profit Track 100 (2019, 2021), and International Track 200 (2020). The company holds regulated entity status across the UK (FCA), France (ACPR), Germany, Italy (RUI), Ireland, DIFC (DFSA), Labuan (FSA), and the US as a Lloyd's Coverholder.

Name

Nexus Underwriting Management

Legal name

Kentro Capital Limited

Website

https://nexusunderwriting.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

251–500 employees

Short description

Nexus Underwriting Management is a London-based specialty Managing General Agent, the largest independent in the London market, underwriting complex risks across Financial Lines, Reinsurance, Specialty Casualty, Cyber, Marine, Trade Credit, and Fine Art for 1.1 million insureds in 12 countries through wholesale broker networks on behalf of 50+ capacity providers including Lloyd's syndicates, Axa, Beazley, and Hiscox.

Ownership category

akta.pro rank

Product category

Specialty Insurance Underwriting

NAICS

Insurance Agencies and Brokerages (52421)

SIC

Insurance Agents, Brokers & Service (6411)

akta.pro primary industry

Insurance Program Administration & MGA/MGU Services (FSAEADAK)

akta.pro secondary industry

Structured Finance Origination, Underwriting & Distribution (FSACACAL)

Keywords

• Specialty insurance underwriting
• Managing general agent
• Wholesale insurance distribution
• Financial lines coverage
• Reinsurance placement

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. MGA Premium-Based Revenue: As a Managing General Agent, Nexus earns revenue through underwriting premiums, managing insurance programs on behalf of capacity providers (insurers, reinsurers, Lloyd's syndicates). Revenue is generated from the spread between premiums collected and claims paid, plus administrative fees.
2. Specialty Insurance Underwriting: Bespoke insurance products across Financial Lines, A&H Reinsurance, Specialty Casualty, Cyber, Fine Art and other niche classes. Revenue derived from premium writings for complex risks that traditional insurers avoid.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

Nexus Underwriting Management is a specialty Managing General Agent (MGA) that underwrites and distributes bespoke insurance and reinsurance solutions on behalf of capacity providers, including Lloyd's syndicates and A+ rated carriers such as Axa, Beazley, and Hiscox. The company focuses on complex, niche, and hard-to-place risks across Financial Lines, Specialty Casualty, A&H Reinsurance, Cyber, Fine Art, Trade Credit and Surety, and Marine, delivered exclusively through wholesale and retail broker networks supported by proprietary online trading portals and an in-house claims team.

Product overview

Nexus Underwriting Management is a leading independent specialty Managing General Agent (MGA) group founded in 2008, operating globally across UK, Europe, US, and Asia markets with approximately 300+ employees. The company offers a diversified portfolio of specialty insurance and reinsurance products through its platform-plus-portals architecture. Core products include Financial Lines (Management and Professional Liability, Small Business Protect, Financial Services, Architects & Engineers), Specialty Casualty (Product Recall and Contamination, Alternative Risk Transfer), Reinsurance (A&H Reinsurance, General Treaty, Structured Solutions), Cyber Liability (Nexus Cyber Policy with up to $5M coverage), Marine (Yachtsure, Marinas and Marine Trade, Racecover, Marine Cargo), Trade Credit and Surety, A&H and Travel, and Fine Art insurance. The company operates proprietary digital platforms including Nexus RiskWrite Portal, Nexus Approach, Millstream Online, and EBA Cauzioni, delivering bespoke underwriting solutions with capacity backing from multiple insurers. Key growth areas include specialty casualty, reinsurance, and alternative risk transfer, with recent expansion into Fine Art insurance (January 2026) and Alternative Risk Transfer (2024).

Differentiator

Problem solved

Functional benefit

Brands

• Millstream Underwriting: Trade credit and specialty insurance products
• Millstream Online
• Millstream Global Flying
• Nexus Specialty
• Nexus Re
• Nexus CIFS
• Xenia Broking Group

Products and services

• Management and Professional Liability

Quantifiable outcome

• $550m GWP currently, projected to reach $650m
• +3 more outcomes

Named customers6 records

Segments10 records

Ideal customer profiles8 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators9 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Canopius Group: Canopius is a Lloyd's and global specialty (re)insurer offering marine, energy, cyber, and specialty lines. It is comparable to Nexus in its specialty orientation, Lloyd's-centric distribution, and appetite for delegated authority partnerships.
• Beazley plc: Beazley is a Lloyd's-listed specialty insurer/MGA with leading positions in cyber, marine, political risk, and specialty lines. It competes head-to-head with Nexus in Financial Lines and A&H Reinsurance and serves as a capacity provider to Nexus's ART solutions, making it both a peer and a partner.
• Hiscox Ltd: Hiscox is a Lloyd's-listed specialty insurer with deep expertise in professional indemnity, cyber, marine, and fine art — overlapping significantly with Nexus's Financial Lines, Cyber, and Marine product sets. Hiscox also provides capacity to Nexus ART solutions and previously divested its MGA Marine and Global Flying businesses to Nexus.
• Ryan Specialty Group: Ryan Specialty is a US-headquartered specialty insurance platform combining wholesale brokerage, underwriting management, and delegated authority services. Its specialty MGA and binding authority model, multi-class portfolio, and acquisition-led growth mirror Nexus's strategy from a US base.
• CFC Underwriting: CFC is a London-based specialist MGA writing complex and emerging risks (cyber, professional indemnity, marine, aviation) for SMEs and mid-market clients. It is one of the closest direct comparables to Nexus in terms of London specialty MGA positioning, broker-led distribution, and appetite for hard-to-place risks.
• Ascot Underwriting Holdings: Ascot is a specialty insurance group operating at Lloyd's with delegated authority to syndicate-backed MGAs across property, marine, and specialty casualty. It is comparable to Nexus as a Lloyd's-anchored specialty platform offering underwriting expertise and capacity to MGAs.
• Brit Insurance Holdings: Brit is a Lloyd's-focused specialty insurer writing a diversified book across marine, energy, property, and specialty casualty. Its specialty, multi-class book and Lloyd's/MGA hybrid model make it a comparable specialty competitor to Nexus.

Emerging players

• Accelerant: Accelerant is a US-based specialty insurance platform that enables MGAs through delegated authority capacity, data, and analytics. It is comparable to Nexus as a specialty MGA enabler/aggregator but represents a newer, technology-led model focused on the US rather than the London market.

Broad incumbents

• Liberty Specialty Markets: Liberty Specialty Markets is the London hub of Liberty Mutual's global specialty operations, writing marine, energy, financial lines, and cyber through Lloyd's and company market platforms. It competes broadly with Nexus in specialty lines but as a major global carrier rather than an independent MGA.
• Markel Group: Markel is a US-listed specialty insurer with significant Lloyd's and international operations across professional indemnity, marine, fine art, and reinsurance. It overlaps with Nexus across multiple specialty classes but operates as a much larger, diversified carrier rather than an MGA.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/nexus-underwriting-management-limited

Revenue estimate

Valuation estimate

Number of profiles

Profiles23 records

Subsidiaries17 records

Funding overview

Funding rounds1 record

Investors1 record

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

M&A10 records

Investments

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

Frequently asked questions about Nexus Underwriting Management