Company lists · Data refreshed September 2026

Top 25 Small cap stocks based in the United Kingdom

Name: Small cap stocks based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 328 companies tracked

RevenueBase identified 328 small cap stocks headquartered in the United Kingdom as of September 2026 and tracks 8,845 professional contacts across them, including 4,438 with verified work emails. London is the largest hub.

This list covers small cap stocks headquartered in the 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 22, 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 22, 2026 86% judged on-target in blind review

328Companies

8,845Contacts tracked

4,438Verified emails

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The 25 largest small cap stocks based in the United Kingdom

Ranked by team size

Top 25 of 328 small cap stocks based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to small cap stocks: 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	Janus Henderson Investors	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	3,000 contacts →
	Indirect evidence “At Janus Henderson, we are investors – we help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class…” Source: RevenueBase Database · checked Sep 22, 2026
2	Baillie Gifford	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 22, 2026	1,001-5,000	1,549 contacts →
	Indirect evidence “We are an independent investment manager founded over a century ago in Edinburgh, owned and run by 59 partners.” Source: RevenueBase Database · checked Sep 22, 2026
3	7im	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	403 contacts →
	Indirect evidence “Seven Investment Management (7IM) is an investment management business that helps individuals, their families and advisers to manage their capital to meet their financial needs…” Source: RevenueBase Database · checked Sep 22, 2026
4	Fisher Investments UK	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	244 contacts →
	Indirect evidence “Fisher Investments UK is a private investment advice and management company, offering the discretionary investment management services of our US-based parent company, Fisher…” Source: RevenueBase Database · checked Sep 22, 2026
5	T. Rowe Price UK	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	5,001-10,000	191 contacts →
	Indirect evidence “T.” Source: RevenueBase Database · checked Sep 22, 2026
6	Mondrian Investment Partners Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	148 contacts →
	Indirect evidence “Mondrian Investment Partners Limited is an independent, employee-owned, international, value-oriented investment manager with offices in London, Philadelphia and Singapore.” Source: RevenueBase Database · checked Sep 22, 2026
7	Columbia Threadneedle Investments Emea Apac	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	96 contacts →
	Indirect evidence “At Columbia Threadneedle Investments, we invest to make a difference in your world, and the wider world.” Source: RevenueBase Database · checked Sep 22, 2026
8	Waverton Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	92 contacts →
	Indirect evidence “Waverton is an award-winning investment management house dedicated to creating high-quality investment solutions and providing bespoke, personal service for private clients…” Source: RevenueBase Database · checked Sep 22, 2026
9	Marathon Asset Management Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	77 contacts →
	Indirect evidence “Marathon Asset Management is an independent, privately owned investment management firm based in London.” Source: RevenueBase Database · checked Sep 22, 2026
10	Guinness Global Investors	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	75 contacts →
	Indirect evidence “Guinness is independent and focused purely on investment management.” Source: RevenueBase Database · checked Sep 22, 2026
11	Fundsmith LLP UK	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	55 contacts →
	Indirect evidence “We are an investment management firm established in 2010 by Terry Smith.” Source: RevenueBase Database · checked Sep 22, 2026
12	Marble BAR Asset Management LLP	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	48 contacts →
	Indirect evidence “Marble Bar Asset Management is a UK based investment manager with an established track record building successful entrepreneurial PM-centric businesses.” Source: RevenueBase Database · checked Sep 22, 2026
13	City Of London Investment Management Company Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “At City of London Investment Management Limited (CLIM), we focus not on gathering assets, but on building products that reflect our expertise.” Source: RevenueBase Database · checked Sep 22, 2026
14	Bell Rock Capital Management LLP	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
15	Montanaro Asset Management	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	35 contacts →
	Partial evidence “Montanaro aims to generate superior investment returns by investing exclusively in Small & MidCap companies globally.” Source: RevenueBase Database · checked Sep 22, 2026
16	Tyndall Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	34 contacts →
	Indirect evidence “Tyndall has a clear aim – to deliver exceptional returns, and outstanding client service.” Source: RevenueBase Database · checked Sep 22, 2026
17	Findlay Park Partners LLP	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	34 contacts →
	Indirect evidence “We are Findlay Park Partners, an independent investment partnership based in London and specialising in US equities for over 25 years.” Source: RevenueBase Database · checked Sep 22, 2026
18	Henderson Rowe	Indirect evidence	Mayfair, United KingdomHQ checked Sep 22, 2026	11-50	32 contacts →
	Indirect evidence “Henderson Rowe is a UK-based investment manager.” Source: RevenueBase Database · checked Sep 22, 2026
19	SUN Global Investments Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	31 contacts →
	Indirect evidence “Sun Global Investments Limited is an investment advisory firm providing full scope of services to Institutional Investors, Family offices, Corporate Clients and High Net Worth…” Source: RevenueBase Database · checked Sep 22, 2026
20	Trinity Street Asset Management LLP	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	30 contacts →
	Indirect evidence “Trinity Street Asset Management is an investment management firm based in London.” Source: RevenueBase Database · checked Sep 22, 2026
21	Albert E Sharp	Indirect evidence	Stratford-upon-avon, United KingdomHQ checked Sep 22, 2026	11-50	27 contacts →
	Indirect evidence “Albert E Sharp is an established investment manager which provides both discretionary portfolio management and investment advice to individuals, pension schemes, corporates and…” Source: RevenueBase Database · checked Sep 22, 2026
22	Cerno Capital	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	26 contacts →
	Indirect evidence “We provide thoughtful, independent investment management for curious investors with a mindset that looks to the next generation.” Source: RevenueBase Database · checked Sep 22, 2026
23	Sparrows Capital Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Sparrows Capital is a private investment firm servicing professional clients, including Financial Advisers, ultra-high net worth individuals and trusts, charities, endowments and…” Source: RevenueBase Database · checked Sep 22, 2026
24	Polunin Capital Partners Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Founded in 2001, Polunin is an employee-owned value specialist managing c.$7.5bln in International and Emerging Markets equity portfolios on behalf of an exclusively institutional…” Source: RevenueBase Database · checked Sep 22, 2026
25	Ennismore Fund Management Limited	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Ennismore Fund Management is a pan-European investment management company based in London.” Source: RevenueBase Database · checked Sep 22, 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: small cap stocks. 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 small cap stocks.
Partial evidence: Its own public description names part of small cap stocks, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name small cap stocks. 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 328 small cap stocks based in the United Kingdom

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Small cap stocks based in the United Kingdom at a glance

As of Sep 22, 2026

50.2%Verified-email coverage

27.0Average contacts per company

1-10Median size (employees)

66.8%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

171

11-50

116

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 328 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 small cap stocks, 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 the United Kingdom whose own description of what they do matches “small cap stocks”. 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 small cap stocks), 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 small cap stocks, and records with no verified work email. Companies headquartered outside United Kingdom 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, 4,438 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 22, 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.

Small cap stocks by metro

Small cap stocks in London219

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 small cap stocks, 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 small cap stocks are there based in the United Kingdom?

RevenueBase identified 328 small cap stocks headquartered in the 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?

Janus Henderson Investors, headquartered in London, tops this list with the largest team on record.

Which city has the most small cap stocks?

London leads with 219 headquartered companies, followed by Edinburgh (12) and Bath (2).

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 4,438 verified decision-maker contacts tracked across these 328 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 22, 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.