Company lists · Data refreshed October 2026
Top 24 Casualty reinsurance brokers based in London, United Kingdom
RevenueBase identified 178 company matches for casualty reinsurance brokers associated with London, United Kingdom as of October 2026 and tracks 35,670 professional contacts across them, including 15,856 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for casualty reinsurance brokers associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 9, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 24 largest casualty reinsurance brokers based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 9,413 contacts → | ||||
Exact match “We’re Howden, the people first insurance group with employee ownership at its heart.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 2 | 2,558 contacts → | ||||
Exact match “Gallagher Re is one of the largest global reinsurance brokers, helping clients access the capital they need with strategic solutions built for volatile markets.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 3 | 2,331 contacts → | ||||
Exact match “Howden Insurance Brokers Ltd is a leading provider of insurance broking, risk consulting, and employee benefits advice.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 4 | 1,887 contacts → | ||||
Exact match “Lloyd’s is the only insurance marketplace of its kind in the world.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 5 | 1,361 contacts → | ||||
Exact match “At QBE we’re driven by our purpose of enabling a more resilient future.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 6 | 1,336 contacts → | ||||
Exact match “For over four decades, BMS has transformed risk into progress, earning our place as one of the world’s leading insurance and reinsurance brokers.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 7 | 1,133 contacts → | ||||
Exact match “Our reputation as the finest advocates in the business comes from our exceptional people delivering exceptional results for over 120 years.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 8 | 1,108 contacts → | ||||
Exact match “We are a specialist insurer and reinsurer with a 100-year record of helping clients navigate the world’s most complex and demanding risks.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 9 | 971 contacts → | ||||
Exact match “As the insurance operations within the Markel Group Inc.(NYSE: MKL), we operate the Markel Specialty, Markel International, and Markel Global Reinsurance divisions, as well as…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 10 | 970 contacts → | ||||
Exact match “Our history has made us.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 11 | 860 contacts → | ||||
Exact match “The global reinsurance broker and risk, capital, and strategic advisor focused on relentless innovation and superior analytics for top client service.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 12 | 594 contacts → | ||||
Exact match “Complex risk.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 13 | 514 contacts → | ||||
Exact match “PIB Insurance Brokers (PIB) are a leading insurance broker with access to risk management services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 14 | 497 contacts → | ||||
Exact match “At SSY, we believe that experience matters.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 15 | 380 contacts → | ||||
Exact match “Acrisure Re is a leading re/insurance intermediary and corporate advisor, offering bespoke and innovative capital, risk and program solutions to clients across the global…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 16 | 340 contacts → | ||||
Exact match “Antares provides local and international insurance and reinsurance capacity, risks transfer solutions and products through our Lloyd’s and company market platforms operating from…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 17 | 303 contacts → | ||||
Exact match “Specialist Risk Group (SRG) brings together individuals and businesses from across the world, who are united in our pursuit of specialism.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 18 | 299 contacts → | ||||
Exact match “In April 2022, Aston Lark became part of the Howden Group, with the aim of creating a standout full-service broker, unrivalled in its quality, scale and reach in the UK and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 19 | 272 contacts → | ||||
Exact match “In an industry often shaped by legacy and complexity, Inigo was built to be different.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 20 | 257 contacts → | ||||
Exact match “Atrium is a leading (re)insurance group at Lloyd's, the world's specialist insurance market.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 21 | 238 contacts → | ||||
Exact match “United Insurance Brokers Limited (UIBL) is an integral part of one of the largest privately-owned independent international insurance and reinsurance brokers headquartered in…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 22 | 226 contacts → | ||||
Exact match “Jensten is the connected broker of scale, delivering superior outcomes for commercial, corporate and personal clients through our advisory and service capabilities, supported by…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 23 | 218 contacts → | ||||
Exact match “James Hallam are one of the UK’s leading, fully independent, brokers and have a reputation for providing superior risk advice and insurance management programmes.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 24 | 178 contacts → | ||||
Exact match “We are a global (re)insurance group that operates across both the underwriting and broking sectors.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “casualty reinsurance brokers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 24 of 178 casualty reinsurance brokers based in London, United Kingdom
See the full list, filter by size, metro and specialty, and access 15,856 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Casualty reinsurance brokers based in London, United Kingdom at a glance
As of Oct 9, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 178 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with London, United Kingdom whose business descriptions match “casualty reinsurance brokers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 15,856 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 9, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “casualty reinsurance brokers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many casualty reinsurance brokers are there based in London, United Kingdom?
RevenueBase identified 178 company matches for casualty reinsurance brokers associated with London, United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Howden tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United Kingdom has the most casualty reinsurance brokers?
London leads the United Kingdom with 178 company records, followed by City Of London (12) and Leeds (10).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 15,856 professional contacts with verified work emails tracked across these 178 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 2026.
Ready to reach these companies? Verified emails and direct dials for all 178 casualty reinsurance brokers based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Casualty reinsurance brokers by geography
- Casualty reinsurance brokers based in Buenos Aires, Argentina
- Casualty reinsurance brokers based in Sydney, Australia
- Casualty reinsurance brokers based in Curitiba, Brazil
- Casualty reinsurance brokers based in Rio De Janeiro, Brazil
- Casualty reinsurance brokers based in Sao Paulo, Brazil
- Casualty reinsurance brokers based in Toronto, Canada
- Casualty reinsurance brokers based in Paris, France
- Casualty reinsurance brokers based in Mumbai, India
- Casualty reinsurance brokers based in Milan, Italy
- Casualty reinsurance brokers based in Nairobi, Kenya
- Casualty reinsurance brokers based in Warsaw, Poland
- Casualty reinsurance brokers based in Madrid, Spain
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Casualty reinsurance brokers based in Buenos Aires, Argentina
- Casualty reinsurance brokers based in Sydney, Australia
- Casualty reinsurance brokers based in Curitiba, Brazil
- Casualty reinsurance brokers based in Rio De Janeiro, Brazil
- Casualty reinsurance brokers based in Sao Paulo, Brazil
- Casualty reinsurance brokers based in Toronto, Canada
Company intelligence · public preview
Top 24 casualty reinsurance brokers based in London, United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 178 matching company records for casualty reinsurance brokers based in London, United Kingdom, with 35,670 tracked contacts and 15,856 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 9, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 24 casualty reinsurance brokers based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Howdenhowdengroupholdings.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 9,413 contacts → |
“We’re Howden, the people first insurance group with employee ownership at its heart.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Gallagher REajg.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,558 contacts → |
“Gallagher Re is one of the largest global reinsurance brokers, helping clients access the capital they need with strategic solutions built for volatile markets.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Howden Insurance Brokers Limitedhowdengroup.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,331 contacts → |
“Howden Insurance Brokers Ltd is a leading provider of insurance broking, risk consulting, and employee benefits advice.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Lloyd'slloyds.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,887 contacts → |
“Lloyd’s is the only insurance marketplace of its kind in the world.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  QBE Europeqbeeurope.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,361 contacts → |
“At QBE we’re driven by our purpose of enabling a more resilient future.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  BMS Groupbmsgroup.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,336 contacts → |
“For over four decades, BMS has transformed risk into progress, earning our place as one of the world’s leading insurance and reinsurance brokers.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Miller Insurance Services LLPmiller-insurance.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,133 contacts → |
“Our reputation as the finest advocates in the business comes from our exceptional people delivering exceptional results for over 120 years.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MS Amlinmsamlin.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,108 contacts → |
“We are a specialist insurer and reinsurer with a 100-year record of helping clients navigate the world’s most complex and demanding risks.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Markel Internationalmarkel.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 971 contacts → |
“As the insurance operations within the Markel Group Inc.(NYSE: MKL), we operate the Markel Specialty, Markel International, and Markel Global Reinsurance divisions, as well as…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Price Forbespriceforbes.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 970 contacts → |
“Our history has made us.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Howden REhowdenre.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 860 contacts → |
“The global reinsurance broker and risk, capital, and strategic advisor focused on relentless innovation and superior analytics for top client service.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Mcgill And Partnersmcgillpartners.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 594 contacts → |
“Complex risk.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  PIB Insurance Brokerspib-insurance.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 514 contacts → |
“PIB Insurance Brokers (PIB) are a leading insurance broker with access to risk management services.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  SSYssyglobal.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 497 contacts → |
“At SSY, we believe that experience matters.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Acrisure REacrisurere.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 380 contacts → |
“Acrisure Re is a leading re/insurance intermediary and corporate advisor, offering bespoke and innovative capital, risk and program solutions to clients across the global…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Antaresantaresglobal.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 340 contacts → |
“Antares provides local and international insurance and reinsurance capacity, risks transfer solutions and products through our Lloyd’s and company market platforms operating from…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Specialist Risk Groupspecialistrisk.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 303 contacts → |
“Specialist Risk Group (SRG) brings together individuals and businesses from across the world, who are united in our pursuit of specialism.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Howden, The NEW Name For Aston Larkhowdenbroking.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 299 contacts → |
“In April 2022, Aston Lark became part of the Howden Group, with the aim of creating a standout full-service broker, unrivalled in its quality, scale and reach in the UK and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  INIGOinigoinsurance.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 272 contacts → |
“In an industry often shaped by legacy and complexity, Inigo was built to be different.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Atriumatrium-uw.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 257 contacts → |
“Atrium is a leading (re)insurance group at Lloyd's, the world's specialist insurance market.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  United Insurance Brokers Limiteduib.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 238 contacts → |
“United Insurance Brokers Limited (UIBL) is an integral part of one of the largest privately-owned independent international insurance and reinsurance brokers headquartered in…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Jenstenjensten.co.ukHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 226 contacts → |
“Jensten is the connected broker of scale, delivering superior outcomes for commercial, corporate and personal clients through our advisory and service capabilities, supported by…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  James Hallamjameshallam.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 218 contacts → |
“James Hallam are one of the UK’s leading, fully independent, brokers and have a reputation for providing superior risk advice and insurance management programmes.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Aventum Groupaventumgroup.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 178 contacts → |
“We are a global (re)insurance group that operates across both the underwriting and broking sectors.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 178 company matches
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Casualty reinsurance brokers: dataset insights
October 9, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
177 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 178 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 9, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for casualty reinsurance brokers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many casualty reinsurance brokers did RevenueBase find based in London, United Kingdom?
The saved snapshot records 178 matching company records, 35,670 tracked contacts and 15,856 verified emails. The public preview displays 24 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 9, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Casualty reinsurance brokers by geography
- Casualty reinsurance brokers based in Buenos Aires, Argentina
- Casualty reinsurance brokers based in Sydney, Australia
- Casualty reinsurance brokers based in Curitiba, Brazil
- Casualty reinsurance brokers based in Rio De Janeiro, Brazil
- Casualty reinsurance brokers based in Sao Paulo, Brazil
- Casualty reinsurance brokers based in Toronto, Canada
- Casualty reinsurance brokers based in Paris, France
- Casualty reinsurance brokers based in Mumbai, India
- Casualty reinsurance brokers based in Milan, Italy
- Casualty reinsurance brokers based in Nairobi, Kenya
- Casualty reinsurance brokers based in Warsaw, Poland
- Casualty reinsurance brokers based in Madrid, Spain
Cite this list
RevenueBase Data Team. Top 24 casualty reinsurance brokers based in London, United Kingdom. Snapshot: October 9, 2026. https://revenuebase.ai/companies/casualty-reinsurance-brokers/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Casualty reinsurance brokers based in Buenos Aires, Argentina
- Casualty reinsurance brokers based in Sydney, Australia
- Casualty reinsurance brokers based in Curitiba, Brazil
- Casualty reinsurance brokers based in Rio De Janeiro, Brazil
- Casualty reinsurance brokers based in Sao Paulo, Brazil
- Casualty reinsurance brokers based in Toronto, Canada
Company intelligence · public preview
Top 24 casualty reinsurance brokers based in London, United Kingdom
RevenueBase records 178 matching company records for casualty reinsurance brokers based in London, United Kingdom, with 35,670 tracked contacts and 15,856 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 9, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 24 casualty reinsurance brokers based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Howdenhowdengroupholdings.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 9,413 contacts → |
“We’re Howden, the people first insurance group with employee ownership at its heart.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Gallagher REajg.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,558 contacts → |
“Gallagher Re is one of the largest global reinsurance brokers, helping clients access the capital they need with strategic solutions built for volatile markets.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Howden Insurance Brokers Limitedhowdengroup.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,331 contacts → |
“Howden Insurance Brokers Ltd is a leading provider of insurance broking, risk consulting, and employee benefits advice.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Lloyd'slloyds.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,887 contacts → |
“Lloyd’s is the only insurance marketplace of its kind in the world.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | QBE Europeqbeeurope.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,361 contacts → |
“At QBE we’re driven by our purpose of enabling a more resilient future.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | BMS Groupbmsgroup.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,336 contacts → |
“For over four decades, BMS has transformed risk into progress, earning our place as one of the world’s leading insurance and reinsurance brokers.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Miller Insurance Services LLPmiller-insurance.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,133 contacts → |
“Our reputation as the finest advocates in the business comes from our exceptional people delivering exceptional results for over 120 years.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MS Amlinmsamlin.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,108 contacts → |
“We are a specialist insurer and reinsurer with a 100-year record of helping clients navigate the world’s most complex and demanding risks.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Markel Internationalmarkel.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 971 contacts → |
“As the insurance operations within the Markel Group Inc.(NYSE: MKL), we operate the Markel Specialty, Markel International, and Markel Global Reinsurance divisions, as well as…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Price Forbespriceforbes.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 970 contacts → |
“Our history has made us.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Howden REhowdenre.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 860 contacts → |
“The global reinsurance broker and risk, capital, and strategic advisor focused on relentless innovation and superior analytics for top client service.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Mcgill And Partnersmcgillpartners.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 594 contacts → |
“Complex risk.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | PIB Insurance Brokerspib-insurance.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 514 contacts → |
“PIB Insurance Brokers (PIB) are a leading insurance broker with access to risk management services.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | SSYssyglobal.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 497 contacts → |
“At SSY, we believe that experience matters.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Acrisure REacrisurere.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 380 contacts → |
“Acrisure Re is a leading re/insurance intermediary and corporate advisor, offering bespoke and innovative capital, risk and program solutions to clients across the global…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Antaresantaresglobal.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 340 contacts → |
“Antares provides local and international insurance and reinsurance capacity, risks transfer solutions and products through our Lloyd’s and company market platforms operating from…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Specialist Risk Groupspecialistrisk.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 303 contacts → |
“Specialist Risk Group (SRG) brings together individuals and businesses from across the world, who are united in our pursuit of specialism.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Howden, The NEW Name For Aston Larkhowdenbroking.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 299 contacts → |
“In April 2022, Aston Lark became part of the Howden Group, with the aim of creating a standout full-service broker, unrivalled in its quality, scale and reach in the UK and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | INIGOinigoinsurance.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 272 contacts → |
“In an industry often shaped by legacy and complexity, Inigo was built to be different.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Atriumatrium-uw.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 257 contacts → |
“Atrium is a leading (re)insurance group at Lloyd's, the world's specialist insurance market.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | United Insurance Brokers Limiteduib.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 238 contacts → |
“United Insurance Brokers Limited (UIBL) is an integral part of one of the largest privately-owned independent international insurance and reinsurance brokers headquartered in…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Jenstenjensten.co.uk HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 226 contacts → |
“Jensten is the connected broker of scale, delivering superior outcomes for commercial, corporate and personal clients through our advisory and service capabilities, supported by…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | James Hallamjameshallam.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 218 contacts → |
“James Hallam are one of the UK’s leading, fully independent, brokers and have a reputation for providing superior risk advice and insurance management programmes.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Aventum Groupaventumgroup.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 178 contacts → |
“We are a global (re)insurance group that operates across both the underwriting and broking sectors.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 178 company matches
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Casualty reinsurance brokers: dataset insights
October 9, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
177 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 178 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 9, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for casualty reinsurance brokers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many casualty reinsurance brokers did RevenueBase find based in London, United Kingdom?
The saved snapshot records 178 matching company records, 35,670 tracked contacts and 15,856 verified emails. The public preview displays 24 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 9, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 24 casualty reinsurance brokers based in London, United Kingdom. Snapshot: October 9, 2026. https://revenuebase.ai/companies/casualty-reinsurance-brokers/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Casualty reinsurance brokers based in Buenos Aires, Argentina
- Casualty reinsurance brokers based in Sydney, Australia
- Casualty reinsurance brokers based in Curitiba, Brazil
- Casualty reinsurance brokers based in Rio De Janeiro, Brazil
- Casualty reinsurance brokers based in Sao Paulo, Brazil
- Casualty reinsurance brokers based in Toronto, Canada