Company lists · Data refreshed September 2026

Top 25 Insurance underwriting platforms based in London, United Kingdom

Name: Insurance underwriting platforms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 161 companies tracked

RevenueBase identified 161 insurance underwriting platforms headquartered in London, United Kingdom as of September 2026 and tracks 6,734 professional contacts across them, including 3,360 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers insurance underwriting platforms headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

161Companies

6,734Contacts tracked

3,360Verified emails

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The 25 largest insurance underwriting platforms based in London, United Kingdom

Ranked by team size

Top 25 of 161 insurance underwriting platforms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to insurance underwriting platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Acturis Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	620 contacts →
	Indirect evidence “At Acturis we don't talk about digital transformation, we deliver it.” Source: RevenueBase Database · checked Sep 28, 2026
2	The Ardonagh Group	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	588 contacts →
	Strong evidence “The Ardonagh Group is the UK’s largest independent insurance distribution platform and a top 15 broker globally.” Source: RevenueBase Database · checked Sep 28, 2026
3	KI	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	407 contacts →
	Indirect evidence “Ki is not just a glimpse into the future of risk, it's a bold step forward, redefining what good looks like.” Source: RevenueBase Database · checked Sep 28, 2026
4	Arch Insurance UK Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	330 contacts →
	Partial evidence “At Arch Insurance, we trade how you want to trade.” Source: RevenueBase Database · checked Sep 28, 2026
5	Apollo	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	268 contacts →
	Partial evidence “Apollo was launched in 2009 to provide clients and brokers with an agile and entrepreneurial insurance partner.” Source: RevenueBase Database · checked Sep 28, 2026
6	Vitesse	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	242 contacts →
	Partial evidence “Vitesse is the trusted financial infrastructure connecting the global insurance ecosystem.” Source: RevenueBase Database · checked Sep 28, 2026
7	Hyperexponential	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	220 contacts →
	Strong evidence “hyperexponential (hx) is the agentic platform for underwriting work for commercial P&C insurance.” Source: RevenueBase Database · checked Sep 28, 2026
8	Advantagego	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	120 contacts →
	Partial evidence “AdvantageGo provides revolutionary commercial (re)insurance management solutions that will transform how you manage risk administration.” Source: RevenueBase Database · checked Sep 28, 2026
9	SEND	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	117 contacts →
	Strong evidence “We are the leading insurance platform trusted by world-class insurers to navigate complex risks.” Source: RevenueBase Database · checked Sep 28, 2026
10	Genasys	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	106 contacts →
	Partial evidence “Genasys is a modern feature-rich, full-cycle insurance policy administration system for insurers, MGAs and brokers who are looking to optimise their processes, launch products at…” Source: RevenueBase Database · checked Sep 28, 2026
11	Insurance Insider	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	92 contacts →
	Strong evidence “Insurance Insider is the premier digital news and intelligence platform for the London insurance and global reinsurance markets.” Source: RevenueBase Database · checked Sep 28, 2026
12	Vipr Solutions	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	88 contacts →
	Partial evidence “VIPR is an AI leading technology provider transforming how the insurance market manages and automates data.” Source: RevenueBase Database · checked Sep 28, 2026
13	INSLY	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Indirect evidence “For insurers and MGAs seeking fast, flexible, and future-ready technology, Insly is the low-risk partner that delivers end-to-end results.” Source: RevenueBase Database · checked Sep 28, 2026
14	Whitespace Software	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Partial evidence “Whitespace Software is a London-based technology company focused on the digital transformation of the insurance industry.” Source: RevenueBase Database · checked Sep 28, 2026
15	Artificial Labs	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	82 contacts →
	Strong evidence “Artificial is revolutionising speciality insurance by empowering brokers and carriers to transform their placement and underwriting strategies.” Source: RevenueBase Database · checked Sep 28, 2026
16	Chainthat Limited	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	70 contacts →
	Strong evidence “We are creators of enterprise grade technology platforms that help insurance organisations across the value chain to realise their full potential.” Source: RevenueBase Database · checked Sep 28, 2026
17	XUBER	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	67 contacts →
	Partial evidence “Xuber - Insurance Software for the Global Commercial Market Xuber provides insurance software for the global commercial market, drawing on more than 40 years’ experience with over…” Source: RevenueBase Database · checked Sep 28, 2026
18	Optalitix	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	66 contacts →
	Strong evidence “Optalitix is an award-winning software provider delivering a low-code pricing and underwriting platform for global insurers, reinsurers and MGAs.” Source: RevenueBase Database · checked Sep 28, 2026
19	Insurwave	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “Insurwave is setting a new standard for AI-driven data ingestion and exposure management in specialty insurance.” Source: RevenueBase Database · checked Sep 28, 2026
20	GPM	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	60 contacts →
	Indirect evidence “GPM Development Ltd is an independent software and IT development company based in the Lloyd's building.” Source: RevenueBase Database · checked Sep 28, 2026
21	Kennedys IQ	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	59 contacts →
	Partial evidence “Kennedys IQ is an established provider of unique and advanced technology products that transform the insurance industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	ALULA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “Alula Technologies is a London-based technology partner to insurance businesses.” Source: RevenueBase Database · checked Sep 28, 2026
23	Victor UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence “Empowering you to explore the possible.” Source: RevenueBase Database · checked Sep 28, 2026
24	Innovisk Capital Partners	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	55 contacts →
	Strong evidence “Innovisk Capital Partners is responding to fundamental changes in the insurance industry by creating a new generation of underwriting businesses.” Source: RevenueBase Database · checked Sep 28, 2026
25	K2 International	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	53 contacts →
	Strong evidence “K2 International is a specialty insurance and reinsurance underwriting platform – the London-based arm of K2 Insurance Services, a leading underwriting and distribution franchise…” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: insurance underwriting platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names insurance underwriting platforms.
Partial evidence: Its own public description names part of insurance underwriting platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insurance underwriting platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 161 insurance underwriting platforms based in London, United Kingdom

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Insurance underwriting platforms based in London, United Kingdom at a glance

As of Sep 28, 2026

49.9%Verified-email coverage

41.8Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

10001+

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 161 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among insurance underwriting platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “insurance underwriting platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names insurance underwriting platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among insurance underwriting platforms, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 3,360 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names insurance underwriting platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many insurance underwriting platforms are there based in London, United Kingdom?

RevenueBase identified 161 insurance underwriting platforms headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Acturis Limited, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most insurance underwriting platforms?

London leads the United Kingdom with 161 headquartered companies, followed by Belfast (7) and City Of London (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,360 verified decision-maker contacts tracked across these 161 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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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 Smart Search, 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.