Company lists · Data refreshed September 2026

Top 25 Data platform modernization companies based in London, United Kingdom

Name: Data platform modernization companies 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 195 companies tracked

RevenueBase identified 195 data platform modernization companies headquartered in London, United Kingdom as of September 2026 and tracks 2,736 professional contacts across them, including 1,038 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers data platform modernization companies 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

195Companies

2,736Contacts tracked

1,038Verified emails

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The 25 largest data platform modernization companies based in London, United Kingdom

Ranked by team size

Top 25 of 195 data platform modernization companies 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 data platform modernization 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	Datatonic	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	284 contacts →
	Partial evidence “The leading cloud data + AI consultancy, driving business impact for the world's most ambitious businesses, through cutting-edge cloud technologies.” Source: RevenueBase Database · checked Sep 28, 2026
2	ELAIT	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	186 contacts →
	Partial evidence “Elait exists to transform unwieldy data into a competitive advantage.” Source: RevenueBase Database · checked Sep 28, 2026
3	Opinov8	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	154 contacts →
	Indirect evidence “Winner of the Best AI Company Award by The Netty Awards · Headquartered in London, powered by a worldwide team of engineers across Europe, Egypt, and the Americas.” Source: RevenueBase Database · checked Sep 28, 2026
4	Elastacloud	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	119 contacts →
	Indirect evidence “Elastacloud has been acquired by Acora.” Source: RevenueBase Database · checked Sep 28, 2026
5	Amber Labs	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	111 contacts →
	Indirect evidence “Trusted by some of the UK's most important organisations, Amber Labs delivers digital transformation where assurance matters just as much as pace.” Source: RevenueBase Database · checked Sep 28, 2026
6	DOT Collective	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	93 contacts →
	Partial evidence “We are data and cloud practitioners, and we create the springboard for momentous organisational leaps.” Source: RevenueBase Database · checked Sep 28, 2026
7	Xiatech	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	89 contacts →
	Partial evidence “Integrate your systems, create a single trusted view of data and access real-time insights – all in one cloud-native solution.” Source: RevenueBase Database · checked Sep 28, 2026
8	Datavid	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Partial evidence “Make the most of your data with enterprise-ready software that helps you extract, enrich, and discover your company’s most valuable knowledge.” Source: RevenueBase Database · checked Sep 28, 2026
9	Advancing Analytics	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	79 contacts →
	Strong evidence “Advancing Analytics is a multi-award-winning data consultancy specialising in modern, scalable Data and AI platforms.” Source: RevenueBase Database · checked Sep 28, 2026
10	Nowasys LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	70 contacts →
	Partial evidence “Nowasys is a Data Engineering company based in the United Kingdom.” Source: RevenueBase Database · checked Sep 28, 2026
11	Altius NOW Avanade	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	69 contacts →
	Indirect evidence “Altius is now an Avanade company.” Source: RevenueBase Database · checked Sep 28, 2026
12	Uptitude	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	62 contacts →
	Partial evidence “Uptitude is a Data and Business Intelligence Consultancy that provides customised solutions to complex data problems.” Source: RevenueBase Database · checked Sep 28, 2026
13	Cloudplexo	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	54 contacts →
	Indirect evidence “CloudPlexo is a global technology consulting firm helping organizations transform, innovate, and build resilience through Cloud, AI, and Cybersecurity.” Source: RevenueBase Database · checked Sep 28, 2026
14	Marionete	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	53 contacts →
	Strong evidence “Marionete is a technology consulting firm that empowers organizations to design innovative data strategies, drive digital transformation, and build advanced digital platforms.” Source: RevenueBase Database · checked Sep 28, 2026
15	Onepoint Consulting	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence “We build digital worlds with our collaborators to ensure all the worlds we live in reap the benefits.” Source: RevenueBase Database · checked Sep 28, 2026
16	Turintech AI	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	52 contacts →
	Partial evidence “At TurinTech, we deliver AI-driven solutions that transform the code and data you have into the optimized, production-ready solutions you need.” Source: RevenueBase Database · checked Sep 28, 2026
17	Aptitude Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	49 contacts →
	Partial evidence “Aptitude pairs specialists practitioners with proprietary software-delivering data, AI, and operational transformation at speed, with greater returns and enduring performance.” Source: RevenueBase Database · checked Sep 28, 2026
18	Lumilinks Group LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	42 contacts →
	Partial evidence “Lumilinks is an award-winning Data & AI partner that helps organisations unlock the hidden value in their data, turning complexity into clarity, and raw data into real business…” Source: RevenueBase Database · checked Sep 28, 2026
19	Ometis Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Partial evidence “We help UK businesses get more value from their data.” Source: RevenueBase Database · checked Sep 28, 2026
20	Datasparq	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	39 contacts →
	Strong evidence “From strategy to implementation, from data platforms to AI solutions - we empower organisations to thrive in the AI-powered economy by combining the best of human and machine.” Source: RevenueBase Database · checked Sep 28, 2026
21	Beyond	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	32 contacts →
	Partial evidence “Beyond is a prominent player in the field of data analysis consultancy services and is renowned for its expertise in AI, data science, and technology consulting.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mammoth Analytics	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Strong evidence “Mammoth is the data platform anyone can use.” Source: RevenueBase Database · checked Sep 28, 2026
23	Leit Data	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	31 contacts →
	Partial evidence “LEIT DATA is a consultancy and services company with over 20 years of experience in the sector.” Source: RevenueBase Database · checked Sep 28, 2026
24	kleene.ai	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “Kleene.ai is a data infrastructure startup on a mission to make business data simple, trustworthy and actionable.” Source: RevenueBase Database · checked Sep 28, 2026
25	Tasman Analytics	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Tasman is an analytics agency that turns data into meaningful business value.” 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: data platform modernization 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 data platform modernization companies.
Partial evidence: Its own public description names part of data platform modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data platform modernization 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 195 data platform modernization companies based in London, United Kingdom

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Data platform modernization companies based in London, United Kingdom at a glance

As of Sep 28, 2026

37.9%Verified-email coverage

14.0Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

120

11-50

51-200

201-500

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 195 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 data platform modernization 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 London, United Kingdom whose own description of what they do matches “data platform modernization 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 data platform modernization 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 data platform modernization companies, 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, 1,038 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 data platform modernization 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 data platform modernization companies are there based in London, United Kingdom?

RevenueBase identified 195 data platform modernization companies 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?

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

Which city in the United Kingdom has the most data platform modernization companies?

London leads the United Kingdom with 195 headquartered companies, followed by Manchester (14) and Milton Keynes (8).

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 1,038 verified decision-maker contacts tracked across these 195 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.