Company lists · Data refreshed September 2026

Top 25 Localization software companies based in the United Kingdom

Name: Localization software companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 322 companies tracked

RevenueBase identified 322 localization software companies headquartered in the United Kingdom as of September 2026 and tracks 10,252 professional contacts across them, including 2,444 with verified work emails. London is the largest hub.

This list covers localization software companies 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 14, 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 14, 2026 86% judged on-target in blind review

322Companies

10,252Contacts tracked

2,444Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest localization software companies based in the United Kingdom

Ranked by team size

Top 25 of 322 localization software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to localization software companies: 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	Indirect evidence	Maidenhead, United KingdomHQ checked Sep 14, 2026	1,001-5,000	2,391 contacts →
	Indirect evidence “SDL is the intelligent language and content company.” Source: RevenueBase Database · checked Sep 14, 2026
2	VSI Voice & Script International	Indirect evidence	London, United KingdomHQ checked Sep 14, 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 14, 2026
3	Toppan Digital Language	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	201-500	554 contacts →
	Indirect evidence “Hello, we’re Toppan Digital Language.” Source: RevenueBase Database · checked Sep 14, 2026
4	Mother Tongue	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	309 contacts →
	Indirect evidence “Mother Tongue builds custom multilingual content solutions for global brands, powered by Creative Language Intelligence.” Source: RevenueBase Database · checked Sep 14, 2026
5	THG Fluently	Indirect evidence	London, United KingdomHQ checked Sep 14, 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 14, 2026
6	Translate Plus	Indirect evidence	London, United KingdomHQ checked Sep 14, 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 14, 2026
7	XTM	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	201-500	190 contacts →
	Indirect 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 14, 2026
8	Global Voices LTD	Indirect evidence	Stirling, United KingdomHQ checked Sep 14, 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 14, 2026
9	Travod	Indirect evidence	Leeds, United KingdomHQ checked Sep 14, 2026	51-200	133 contacts →
	Indirect 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 14, 2026
10	Lingo24	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 14, 2026	51-200	130 contacts →
	Indirect 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 14, 2026
11	Sandberg Translation Partners LTD	Indirect evidence	Whiteley, United KingdomHQ checked Sep 14, 2026	51-200	110 contacts →
	Indirect 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 14, 2026
12	polilingua.com	Indirect evidence	London, United KingdomHQ checked Sep 14, 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 14, 2026
13	Conversis	Indirect evidence	Kirtlington, United KingdomHQ checked Sep 14, 2026	51-200	86 contacts →
	Indirect evidence “Conversis, an IQVIA business, provides specialized language services exclusively for the life sciences sector.” Source: RevenueBase Database · checked Sep 14, 2026
14	Codex Global	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	86 contacts →
	Indirect evidence “Codex Global is a forward-thinking Language Solutions Integrator: we work with international brands and organisations to ensure they are deploying best-of-breed technology and…” Source: RevenueBase Database · checked Sep 14, 2026
15	The Translation People	Indirect evidence	Cheadle Hulme, United KingdomHQ checked Sep 14, 2026	51-200	81 contacts →
	Indirect evidence “The Translation People specialises in providing business to business translation and language services for its international client base through a global network of strategic…” Source: RevenueBase Database · checked Sep 14, 2026
16	Transladiem	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	76 contacts →
	Indirect evidence “Transladiem is a language service provider with a human face.” Source: RevenueBase Database · checked Sep 14, 2026
17	ONE Global Solutions	Partial evidence	Leeds, United KingdomHQ checked Sep 14, 2026	11-50	73 contacts →
	Partial evidence “One Global is a leading language and localization company based in Leeds working with clients from all over the world.” Source: RevenueBase Database · checked Sep 14, 2026
18	Cintra Language Services Group	Indirect evidence	Cambridge, United KingdomHQ checked Sep 14, 2026	501-1,000	68 contacts →
	Indirect evidence “Cintra is a leading UK translation and interpreting company providing high-quality language services for businesses and public sector organisations.” Source: RevenueBase Database · checked Sep 14, 2026
19	Mission Connect	Indirect evidence	Birmingham, United KingdomHQ checked Sep 14, 2026	51-200	65 contacts →
	Indirect evidence “Mission Connect is a trusted global partner for translation, research support, and media services, helping businesses connect with diverse markets worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
20	Wordminds	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	62 contacts →
	Indirect evidence “We are a centralised language service hub specially developed for e-learning and multimedia content.” Source: RevenueBase Database · checked Sep 14, 2026
21	Transcom Global LTD	Partial evidence	Manchester, United KingdomHQ checked Sep 14, 2026	201-500	59 contacts →
	Partial evidence “Transcom Global is an ISO 9001:2015 and ISO 17100:2015 certified provider of translation, localization and QA services for the global life science industry.” Source: RevenueBase Database · checked Sep 14, 2026
22	Empower Translate	Indirect evidence	Chepstow, United KingdomHQ checked Sep 14, 2026	11-50	56 contacts →
	Indirect evidence “Indulge in expert insight translations.” Source: RevenueBase Database · checked Sep 14, 2026
23	Absolute Translations LTD	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	56 contacts →
	Indirect evidence “Our international reputation, over professional localised translators and superior customer service make Absolute Translations a reliable choice.” Source: RevenueBase Database · checked Sep 14, 2026
24	EL Turco	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	n/a	54 contacts →
	Partial evidence “Founded by passionate industry veterans in 2016, el turco is a vibrant, innovative player in the localization field, revered for its exceptional services.” Source: RevenueBase Database · checked Sep 14, 2026
25	Wolfestone UK	Indirect evidence	Swansea, United KingdomHQ checked Sep 14, 2026	11-50	47 contacts →
	Indirect evidence “Founded in 2006, Wolfestone is a trusted UK-based language service provider, helping organisations communicate accurately, securely and confidently across 220+ language pairs.” Source: RevenueBase Database · checked Sep 14, 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: localization software companies. 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 localization software companies.
Partial evidence: Its own public description names part of localization software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name localization software companies. 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 322 localization software companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,444 reachable decision-makers.

Free signup · no credit card

View the full list →

Localization software companies based in the United Kingdom at a glance

As of Sep 14, 2026

23.8%Verified-email coverage

31.8Average contacts per company

1-10Median size (employees)

44.1%Largest-city concentration · London

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

171

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 322 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 localization software companies, 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 “localization software companies”. 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 localization software companies), 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 localization software companies, 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, 2,444 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 14, 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.

Localization software companies by metro

Localization software companies in London142

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 localization software companies, 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 localization software companies are there based in the United Kingdom?

RevenueBase identified 322 localization software companies 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 localization software companies?

London leads with 142 headquartered companies, followed by Manchester (11) and Birmingham (9).

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 2,444 verified decision-maker contacts tracked across these 322 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 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 322 localization software companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Localization software companies by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Localization software companies lists · New lists

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.