Company lists · Data refreshed September 2026
Top 25 Excess and surplus insurance underwriters based in the United Kingdom
RevenueBase identified 65 company matches for excess and surplus insurance underwriters associated with the United Kingdom as of September 2026 and tracks 867 professional contacts across them, including 292 with verified work emails. London is the largest hub.
This list covers company matches for excess and surplus insurance underwriters associated with the 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 September 16, 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 25 largest excess and surplus insurance underwriters based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 54 contacts → | ||||
Exact match “We have been helping public sector, education and emergency service organisations across the UK with their risk management and insurance needs for over two decades.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 46 contacts → | ||||
Exact match “First for Specialist - First for Expertise - First for Service First Underwriting offer broker partners the security of a large organisation, but with the agility, expertise and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 31 contacts → | ||||
Exact match “Barbican Insurance Group underwrites business predominantly through our syndicates at Lloyd’s.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 28 contacts → | ||||
Exact match “Independent Lloyd’s broker specialising in Excess and Surplus lines business emanating from managing general agencies and wholesale brokers in U.S.A.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 28 contacts → | ||||
Exact match “Re)insurance for tougher risks.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 19 contacts → | ||||
Exact match “We’ve listened.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 16 contacts → | ||||
Exact match “XS Assure is a specialist underwriter of financial lines risks, including hard-to-place risks.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 16 contacts → | ||||
Exact match “Kay International PLC is a specialist London-based insurance broker and underwriting agency, providing brokers and international partners with direct access to Lloyd’s and London…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 15 contacts → | ||||
Exact match “Alcor is a new and vibrant player in the London and Bermuda direct and facultative property market with an experienced team with a proven track record.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “Underwriting of Commercial Combined and Property Owners risks with ‘A’ rated capacity for both standard and non-standard risks including non-standard construction (Including…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “Incorporated Insurance Group Limited aims to be recognised as one of the leading underwriting agencies in the UK.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 12 contacts → | ||||
Exact match “Underwriting and Claims Handling Agency based in Belfast, providing bespoke Commercial Motor, Liability & Contractors All Risks insurance.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 11 contacts → | ||||
Exact match “Yutree Underwriting is a modern, dynamic,independent underwriting agency, specialising in a wide range of commercial insurance products tailored to the needs of brokers and their…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 11 contacts → | ||||
Exact match “Generation Underwriting Management Limited is a successful Underwriting Agency that was set up in Newcastle upon Tyne in 2010.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 10 contacts → | ||||
Exact match “Phoenix Specialty is a specialist underwriting agency built around one clear principle: expertise matters.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 10 contacts → | ||||
Exact match “As an Insurance Broker we specialise in providing comprehensive range of commercial insurance policies, tailored to meet the unique needs of businesses across various trades.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 10 contacts → | ||||
Exact match “NMU is an award-winning provider of specialty insurance solutions across a range of product lines.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 9 contacts → | ||||
Exact match “Indigo Underwriters is a Lloyd's Coverholder and Underwriting Agency focused exclusively on life, accident, health and worker's compensation insurance, reinsurance and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 8 contacts → | ||||
Exact match “PIUA was founded on the principal of truly personalised and timely service designed to give our clients the most memorable experience possible.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “Ark Insurance Group is an underwriting agency with Lloyds coverholder status.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 21 | 8 contacts → | ||||
Exact match “Peace of mind if things get tough.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 22 | 8 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 23 | 7 contacts → | ||||
Exact match “At W/R/B Underwriting, we take a proactive approach to meeting clients’ business needs in an ever-changing marketplace.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 24 | 6 contacts → | ||||
Exact match “White Oak is a specialist Insurance Underwriting Agency focusing on selected markets requiring expert Underwriting solutions.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 25 | 6 contacts → | ||||
Exact match “Occam Underwriting makes clear, profitable underwriting judgements for complex speciality risks – across Space, Terrorism and Renewable Energy.” Recorded in the RevenueBase company graph · Sep 16, 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 “excess and surplus insurance underwriters”. 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 25 of 65 excess and surplus insurance underwriters based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 292 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Excess and surplus insurance underwriters based in the United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 65 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 the United Kingdom whose business descriptions match “excess and surplus insurance underwriters” 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 292 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 September 16, 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 “excess and surplus insurance underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many excess and surplus insurance underwriters are there based in the United Kingdom?
RevenueBase identified 65 company matches for excess and surplus insurance underwriters associated with the United Kingdom as of September 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?
Risk Management Partners tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most excess and surplus insurance underwriters?
London leads with 28 company records, followed by Birmingham (2) and City Of London (2).
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 292 professional contacts with verified work emails tracked across these 65 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 September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 65 excess and surplus insurance underwriters based in the United Kingdom. Start with a free account, no credit card.
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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.
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Company intelligence · public preview
Top 25 excess and surplus insurance underwriters based in the 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 65 matching company records for excess and surplus insurance underwriters based in the United Kingdom, with 867 tracked contacts and 292 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 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 25 excess and surplus insurance underwriters based in the 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 | Risk Management Partnersrmpartners.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 54 contacts → |
“We have been helping public sector, education and emergency service organisations across the UK with their risk management and insurance needs for over two decades.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | First Underwriting Limitedfirstuw.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 46 contacts → |
“First for Specialist - First for Expertise - First for Service First Underwriting offer broker partners the security of a large organisation, but with the agility, expertise and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Barbican Insurance Groupbarbicaninsurance.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 31 contacts → |
“Barbican Insurance Group underwrites business predominantly through our syndicates at Lloyd’s.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Harman Kemp Limitedharmankemp.com HQ: City Of London, United KingdomReported employees: 11-50 | City Of London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Independent Lloyd’s broker specialising in Excess and Surplus lines business emanating from managing general agencies and wholesale brokers in U.S.A.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Aspectaspect.insureHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Re)insurance for tougher risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Euna Underwritingeuna.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 19 contacts → |
“We’ve listened.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | XS Assure Limitedxsassure.com HQ: East Dulwich, United KingdomReported employees: 11-50 | East Dulwich, United Kingdom | 11-50 | Exact match | 16 contacts → |
“XS Assure is a specialist underwriter of financial lines risks, including hard-to-place risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | KAY International PLCkayint.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 16 contacts → |
“Kay International PLC is a specialist London-based insurance broker and underwriting agency, providing brokers and international partners with direct access to Lloyd’s and London…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Alcor Underwritingalcoruw.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 15 contacts → |
“Alcor is a new and vibrant player in the London and Bermuda direct and facultative property market with an experienced team with a proven track record.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mercia Underwriting Solutions LTDmusl.co.uk HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Underwriting of Commercial Combined and Property Owners risks with ‘A’ rated capacity for both standard and non-standard risks including non-standard construction (Including…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Incorporated Insurance Group Limitediigl.co.uk HQ: Hornchurch, United KingdomReported employees: 11-50 | Hornchurch, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Incorporated Insurance Group Limited aims to be recognised as one of the leading underwriting agencies in the UK.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Amet Insuranceametinsurance.comHQ: Belfast, United KingdomReported employees: 11-50 | Belfast, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Underwriting and Claims Handling Agency based in Belfast, providing bespoke Commercial Motor, Liability & Contractors All Risks insurance.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Yutree Underwritingyutree.com HQ: Newmarket, United KingdomReported employees: 11-50 | Newmarket, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Yutree Underwriting is a modern, dynamic,independent underwriting agency, specialising in a wide range of commercial insurance products tailored to the needs of brokers and their…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Generation Underwritinggenerationunderwriting.com HQ: Newcastle Upon Tyne, United KingdomReported employees: 1-10 | Newcastle Upon Tyne, United Kingdom | 1-10 | Exact match | 11 contacts → |
“Generation Underwriting Management Limited is a successful Underwriting Agency that was set up in Newcastle upon Tyne in 2010.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Phoenix Specialtyphoenixsul.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Phoenix Specialty is a specialist underwriting agency built around one clear principle: expertise matters.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | JMG Insurance Brokers Limited Sandbachjmgsandbach.co.uk HQ: Sandbach, United KingdomReported employees: 11-50 | Sandbach, United Kingdom | 11-50 | Exact match | 10 contacts → |
“As an Insurance Broker we specialise in providing comprehensive range of commercial insurance policies, tailored to meet the unique needs of businesses across various trades.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | NMUnmu.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 10 contacts → |
“NMU is an award-winning provider of specialty insurance solutions across a range of product lines.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Indigo Underwritersindigounderwriters.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Indigo Underwriters is a Lloyd's Coverholder and Underwriting Agency focused exclusively on life, accident, health and worker's compensation insurance, reinsurance and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Property Initiatives Underwriting Agency Piuapiuagency.co.uk HQ: Petersfield, United KingdomReported employees: 11-50 | Petersfield, United Kingdom | 11-50 | Exact match | 8 contacts → |
“PIUA was founded on the principal of truly personalised and timely service designed to give our clients the most memorable experience possible.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  ARK Insurance Group Limitedarkinsurance.co.ukHQ: Coventry, United KingdomReported employees: 11-50 | Coventry, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Ark Insurance Group is an underwriting agency with Lloyds coverholder status.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Dawn Insurance Brokersdawninsurance.co.uk HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Peace of mind if things get tough.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Incepta Risk Management LTDinceptagroup.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | W R B Underwriting A Berkley Companywrbunderwriting.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 7 contacts → |
“At W/R/B Underwriting, we take a proactive approach to meeting clients’ business needs in an ever-changing marketplace.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | White OAK Underwriting Agency Limitedwhiteoakuw.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“White Oak is a specialist Insurance Underwriting Agency focusing on selected markets requiring expert Underwriting solutions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Occam Underwritingoccamunderwriting.com HQ: City Of London, United KingdomReported employees: 11-50 | City Of London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Occam Underwriting makes clear, profitable underwriting judgements for complex speciality risks – across Space, Terrorism and Renewable Energy.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 65 company matches
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Excess and surplus insurance underwriters: dataset insights
September 16, 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
65 records in the displayed employee bands.
0 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 worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 65 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: September 16, 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 excess and surplus insurance underwriters?
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 excess and surplus insurance underwriters did RevenueBase find based in the United Kingdom?
The saved snapshot records 65 matching company records, 867 tracked contacts and 292 verified emails. The public preview displays 25 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: September 16, 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
Excess and surplus insurance underwriters by geography
Cite this list
RevenueBase Data Team. Top 25 excess and surplus insurance underwriters based in the United Kingdom. Snapshot: September 16, 2026. https://revenuebase.ai/companies/excess-and-surplus-insurance-underwriters/united-kingdom.
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
- Excess and surplus insurance underwriters based in Australia
- Excess and surplus insurance underwriters based in the United States
- AI companies based in the United Kingdom
- Cybersecurity companies based in the United Kingdom
- Manufacturing companies based in the United Kingdom
- Media companies based in the United Kingdom
Company intelligence · public preview
Top 25 excess and surplus insurance underwriters based in the United Kingdom
RevenueBase records 65 matching company records for excess and surplus insurance underwriters based in the United Kingdom, with 867 tracked contacts and 292 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 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 25 excess and surplus insurance underwriters based in the 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 | Risk Management Partnersrmpartners.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 54 contacts → |
“We have been helping public sector, education and emergency service organisations across the UK with their risk management and insurance needs for over two decades.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | First Underwriting Limitedfirstuw.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 46 contacts → |
“First for Specialist - First for Expertise - First for Service First Underwriting offer broker partners the security of a large organisation, but with the agility, expertise and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Barbican Insurance Groupbarbicaninsurance.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 31 contacts → |
“Barbican Insurance Group underwrites business predominantly through our syndicates at Lloyd’s.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Harman Kemp Limitedharmankemp.com HQ: City Of London, United KingdomReported employees: 11-50 | City Of London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Independent Lloyd’s broker specialising in Excess and Surplus lines business emanating from managing general agencies and wholesale brokers in U.S.A.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Aspectaspect.insure HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Re)insurance for tougher risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Euna Underwritingeuna.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 19 contacts → |
“We’ve listened.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | XS Assure Limitedxsassure.com HQ: East Dulwich, United KingdomReported employees: 11-50 | East Dulwich, United Kingdom | 11-50 | Exact match | 16 contacts → |
“XS Assure is a specialist underwriter of financial lines risks, including hard-to-place risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | KAY International PLCkayint.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 16 contacts → |
“Kay International PLC is a specialist London-based insurance broker and underwriting agency, providing brokers and international partners with direct access to Lloyd’s and London…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Alcor Underwritingalcoruw.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 15 contacts → |
“Alcor is a new and vibrant player in the London and Bermuda direct and facultative property market with an experienced team with a proven track record.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mercia Underwriting Solutions LTDmusl.co.uk HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Underwriting of Commercial Combined and Property Owners risks with ‘A’ rated capacity for both standard and non-standard risks including non-standard construction (Including…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Incorporated Insurance Group Limitediigl.co.uk HQ: Hornchurch, United KingdomReported employees: 11-50 | Hornchurch, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Incorporated Insurance Group Limited aims to be recognised as one of the leading underwriting agencies in the UK.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Amet Insuranceametinsurance.com HQ: Belfast, United KingdomReported employees: 11-50 | Belfast, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Underwriting and Claims Handling Agency based in Belfast, providing bespoke Commercial Motor, Liability & Contractors All Risks insurance.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Yutree Underwritingyutree.com HQ: Newmarket, United KingdomReported employees: 11-50 | Newmarket, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Yutree Underwriting is a modern, dynamic,independent underwriting agency, specialising in a wide range of commercial insurance products tailored to the needs of brokers and their…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Generation Underwritinggenerationunderwriting.com HQ: Newcastle Upon Tyne, United KingdomReported employees: 1-10 | Newcastle Upon Tyne, United Kingdom | 1-10 | Exact match | 11 contacts → |
“Generation Underwriting Management Limited is a successful Underwriting Agency that was set up in Newcastle upon Tyne in 2010.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Phoenix Specialtyphoenixsul.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 10 contacts → |
“Phoenix Specialty is a specialist underwriting agency built around one clear principle: expertise matters.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | JMG Insurance Brokers Limited Sandbachjmgsandbach.co.uk HQ: Sandbach, United KingdomReported employees: 11-50 | Sandbach, United Kingdom | 11-50 | Exact match | 10 contacts → |
“As an Insurance Broker we specialise in providing comprehensive range of commercial insurance policies, tailored to meet the unique needs of businesses across various trades.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | NMUnmu.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 10 contacts → |
“NMU is an award-winning provider of specialty insurance solutions across a range of product lines.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Indigo Underwritersindigounderwriters.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Indigo Underwriters is a Lloyd's Coverholder and Underwriting Agency focused exclusively on life, accident, health and worker's compensation insurance, reinsurance and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Property Initiatives Underwriting Agency Piuapiuagency.co.uk HQ: Petersfield, United KingdomReported employees: 11-50 | Petersfield, United Kingdom | 11-50 | Exact match | 8 contacts → |
“PIUA was founded on the principal of truly personalised and timely service designed to give our clients the most memorable experience possible.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | ARK Insurance Group Limitedarkinsurance.co.uk HQ: Coventry, United KingdomReported employees: 11-50 | Coventry, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Ark Insurance Group is an underwriting agency with Lloyds coverholder status.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Dawn Insurance Brokersdawninsurance.co.uk HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Peace of mind if things get tough.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Incepta Risk Management LTDinceptagroup.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | W R B Underwriting A Berkley Companywrbunderwriting.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 7 contacts → |
“At W/R/B Underwriting, we take a proactive approach to meeting clients’ business needs in an ever-changing marketplace.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | White OAK Underwriting Agency Limitedwhiteoakuw.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“White Oak is a specialist Insurance Underwriting Agency focusing on selected markets requiring expert Underwriting solutions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Occam Underwritingoccamunderwriting.com HQ: City Of London, United KingdomReported employees: 11-50 | City Of London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Occam Underwriting makes clear, profitable underwriting judgements for complex speciality risks – across Space, Terrorism and Renewable Energy.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Excess and surplus insurance underwriters: dataset insights
September 16, 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
65 records in the displayed employee bands.
0 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 worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 65 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: September 16, 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 excess and surplus insurance underwriters?
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 excess and surplus insurance underwriters did RevenueBase find based in the United Kingdom?
The saved snapshot records 65 matching company records, 867 tracked contacts and 292 verified emails. The public preview displays 25 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: September 16, 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
Excess and surplus insurance underwriters by geography
Cite this list
RevenueBase Data Team. Top 25 excess and surplus insurance underwriters based in the United Kingdom. Snapshot: September 16, 2026. https://revenuebase.ai/companies/excess-and-surplus-insurance-underwriters/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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