Company lists · Data refreshed September 2026

Top 25 Content localization agencies based in the United Kingdom

Name: Content localization agencies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 706 companies tracked

RevenueBase identified 706 content localization agencies headquartered in the United Kingdom as of September 2026 and tracks 14,244 professional contacts across them, including 3,393 with verified work emails. London is the largest hub.

This list covers content localization agencies 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 19, 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 19, 2026 86% judged on-target in blind review

706Companies

14,244Contacts tracked

3,393Verified emails

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The 25 largest content localization agencies based in the United Kingdom

Ranked by team size

Top 25 of 706 content localization agencies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to content localization agencies: 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	SDL	Partial evidence	Maidenhead, United KingdomHQ checked Sep 19, 2026	1,001-5,000	2,391 contacts →
	Partial evidence “SDL is the intelligent language and content company.” Source: RevenueBase Database · checked Sep 19, 2026
2	VSI Voice & Script International	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	727 contacts →
	Indirect evidence “Founded in 1989, VSI - Voice & Script International - has over 36 years of unrivalled expertise and success in all aspects of language versioning.” Source: RevenueBase Database · checked Sep 19, 2026
3	Toppan Digital Language	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	554 contacts →
	Indirect evidence “Hello, we’re Toppan Digital Language.” Source: RevenueBase Database · checked Sep 19, 2026
4	Word360	Indirect evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	201-500	342 contacts →
	Indirect evidence “Word360 are an industry leading language agency that delivers reliable, 24 hour interpretation and translation to global organisations and industry.” Source: RevenueBase Database · checked Sep 19, 2026
5	Mother Tongue	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	309 contacts →
	Partial evidence “Mother Tongue builds custom multilingual content solutions for global brands, powered by Creative Language Intelligence.” Source: RevenueBase Database · checked Sep 19, 2026
6	THG Fluently	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	289 contacts →
	Indirect evidence “We’ve been helping organisations connect authentically with audiences all over the world for over two decades.” Source: RevenueBase Database · checked Sep 19, 2026
7	Translate Plus	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	258 contacts →
	Indirect evidence “translate plus, part of Publicis Groupe, is an award-winning language services provider (LSP) and technology company.” Source: RevenueBase Database · checked Sep 19, 2026
8	Locaria	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	221 contacts →
	Partial evidence “Locaria is a pioneering global multilingual content agency.” Source: RevenueBase Database · checked Sep 19, 2026
9	XTM	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	190 contacts →
	Partial evidence “XTM is the AI Globalization Platform that helps the world's most ambitious enterprises create, manage and deliver multilingual content at scale.” Source: RevenueBase Database · checked Sep 19, 2026
10	Picture Production Company	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	188 contacts →
	Indirect evidence “PPC is one of the largest creative production agencies outside North America, with over 40 years experience in film marketing, creative advertising and localisation.” Source: RevenueBase Database · checked Sep 19, 2026
11	Ics-Digital	Partial evidence	Leeds, United KingdomHQ checked Sep 19, 2026	51-200	168 contacts →
	Partial evidence “ICS-digital is a global SEO, content, advertising, translation & digital PR agency working in over 100 languages, across over 90 markets in the most highly regulated and highly…” Source: RevenueBase Database · checked Sep 19, 2026
12	Prestige Network	Indirect evidence	Newbury, United KingdomHQ checked Sep 19, 2026	51-200	156 contacts →
	Indirect evidence “Prestige Network is a language service provider for businesses needing to communicate in a different language.” Source: RevenueBase Database · checked Sep 19, 2026
13	Absolute Interpreting And Translations LTD	Indirect evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	10001+	154 contacts →
	Indirect evidence “ABSOLUTE INTERPRETING & TRANSLATIONS LIMITED is an international trade and development company based out of 58 Perry Park Crescent, Birmingham, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
14	Global Lingo	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	142 contacts →
	Indirect evidence “At Global Lingo, we help you connect with your international audiences through our premier language and AI driven solutions.” Source: RevenueBase Database · checked Sep 19, 2026
15	Global Voices LTD	Indirect evidence	Stirling, United KingdomHQ checked Sep 19, 2026	51-200	140 contacts →
	Indirect evidence “Global Voices is an international translation and interpretation services company, established in 2004 in Stirling, Scotland.” Source: RevenueBase Database · checked Sep 19, 2026
16	Freedman International	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	136 contacts →
	Indirect evidence “When brands go global, marketing gets exposed.” Source: RevenueBase Database · checked Sep 19, 2026
17	Travod	Partial evidence	Leeds, United KingdomHQ checked Sep 19, 2026	51-200	133 contacts →
	Partial evidence “Travod International is your global content service partner offering customised and agile technology to entrepreneurs and global enterprises so that they build successful…” Source: RevenueBase Database · checked Sep 19, 2026
18	Lingo24	Partial evidence	Edinburgh, United KingdomHQ checked Sep 19, 2026	51-200	130 contacts →
	Partial evidence “We know a one-size-fits all approach doesn’t work for global companies that need to release huge volumes of content across multiple languages, markets and channels - fast.” Source: RevenueBase Database · checked Sep 19, 2026
19	Ics-Translate	Indirect evidence	Leeds, United KingdomHQ checked Sep 19, 2026	51-200	116 contacts →
	Indirect evidence “Across 100+ languages, our linguists connect brands and institutions with their global audiences.” Source: RevenueBase Database · checked Sep 19, 2026
20	Creative Translation	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	111 contacts →
	Indirect evidence “As a company, we take great care to ensure the best possible result for our clients.” Source: RevenueBase Database · checked Sep 19, 2026
21	Sandberg Translation Partners LTD	Partial evidence	Whiteley, United KingdomHQ checked Sep 19, 2026	51-200	110 contacts →
	Partial evidence “With more than 30 years’ experience in translation, localisation and content creation, Sandberg is an ISO 17100-certified translation company and centre of excellence for…” Source: RevenueBase Database · checked Sep 19, 2026
22	Redwood Bbdo	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	99 contacts →
	Partial evidence “We are the world’s leading content agency, working in 27 languages across 80 countries.” Source: RevenueBase Database · checked Sep 19, 2026
23	Finixio	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	96 contacts →
	Indirect evidence “Finixio is UK based remote first Marketing & SEO Agency helping clients all over the world.” Source: RevenueBase Database · checked Sep 19, 2026
24	polilingua.com	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	96 contacts →
	Indirect evidence “PoliLingua is a full-service language service provider headquartered in London, United Kingdom, with presence in US, Moldova, France, Germany, Spain.” Source: RevenueBase Database · checked Sep 19, 2026
25	Global Connects Language Services	Indirect evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	11-50	92 contacts →
	Indirect evidence “When you need to communicate in foreign languages, Global Connects will make your first impression count.” Source: RevenueBase Database · checked Sep 19, 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: content localization agencies. 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 content localization agencies.
Partial evidence: Its own public description names part of content localization agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name content localization agencies. 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 706 content localization agencies based in the United Kingdom

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Content localization agencies based in the United Kingdom at a glance

As of Sep 19, 2026

23.8%Verified-email coverage

20.2Average contacts per company

1-10Median size (employees)

42.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

442

11-50

169

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 706 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 content localization agencies, 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 “content localization agencies”. 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 content localization agencies), 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 content localization agencies, 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, 3,393 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 19, 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.

Content localization agencies by metro

Content localization agencies in London298

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 content localization agencies, 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 content localization agencies are there based in the United Kingdom?

RevenueBase identified 706 content localization agencies 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?

SDL, headquartered in Maidenhead, tops this list with the largest team on record.

Which city has the most content localization agencies?

London leads with 298 headquartered companies, followed by Manchester (18) and Birmingham (14).

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 3,393 verified decision-maker contacts tracked across these 706 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 19, 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.