Company lists · Data refreshed September 2026
Top 25 Data migration consultancies based in the United Kingdom
RevenueBase identified 92 data migration consultancies headquartered in the United Kingdom as of September 2026 and tracks 8,942 professional contacts across them, including 279 with verified work emails. London is the largest hub.
This list covers data migration consultancies 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 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.
The 25 largest data migration consultancies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 34 contacts → | ||||
Partial evidence “Since pioneering the world’s first email archive migration tool in 2006, Transvault has delivered over 3,500 projects across 56 countries.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 31 contacts → | ||||
Strong evidence “Datalynx Ltd is a UK-based consultancy with over 20 years’ experience, dedicated to delivering data migration, data integration, data quality and data architecture & analytics…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 25 contacts → | ||||
Partial evidence “Iridium is a Leeds-based consultancy specialising in delivering large-scale and complex migration and platform services for national and international organisations.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 19 contacts → | ||||
Partial evidence “Data Confidence.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 16 contacts → | ||||
Strong evidence “Technicus is the specialist Salesforce data implementation partner that offers a fully managed process for data migration and data management services across the Salesforce…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 10 contacts → | ||||
Strong evidence “Transform your business data with Hopp’s industry-leading data migration software, and unlock improved data quality, productivity, and decision-making.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 10 contacts → | ||||
Strong evidence “Over the last 20 years Migrate has grown into a Data Services company specializing in Data Migration to Salesforce and extensive Data Cleansing.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 9 contacts → | ||||
Partial evidence “GNC Technology is a UK IT consultancy specialising in Microsoft 365 migrations, digital transformation, and managed IT services for organisations across regulated sectors.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 contacts → | ||||
Partial evidence “Precision Bridge helps customers to migrate, replicate and archive application data from enterprise service management platforms securely and efficiently whilst maintaining data…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Partial evidence “At WiQU, our warm yet professional team of Atlassian Migration experts is dedicated to providing exceptional customer service, unwavering support, and continuous innovation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 contacts → | ||||
Strong evidence “Clarita Solutions provides consultancy for the migration of commercial databases and applications to a modern Postgres data platform for operators, developers, data engineers, and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Partial evidence “Veracity Asset Transformation Service is the most established, comprehensive, end to end asset migration service in the UK.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 contacts → | ||||
Strong evidence “We specialise in Recruitment software (ATS / CRM) and HR Systems and have run of projects migrating and transforming data and documents between over 140 different systems - for…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Strong evidence “For more than 15 years, Syswright has been working with clients to solve data and technology challenges, from consultancy and troubleshooting to systems integrations, migrations…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Strong evidence “Founded in 2011, Konexxia specialises in solving the most challenging aspect of enterprise system transformation: the successful migration of business-critical data.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Indirect evidence “Workday’s powerful suite of reporting and analytics tools is like having a crystal ball for your business-revealing insights that drive performance.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Strong evidence “Over 30 years expertise in delivering Insurance Data Migrations (IDM) In 2016 we delivered over 35 full insurance system migrations as well as a whole host of other data solutions…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Partial evidence “HarlowData is a UK data quality and governance specialist, built for the social housing sector.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Partial evidence “We've been providing high-quality solutions for the IT Service Management, Data Centre Management, Cloud and financial markets since 2008.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Strong evidence “Elitech Solutions are a boutique Microsoft 365 consultancy, dedicated to migrating, securing, and protecting your Microsoft 365 data.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Partial evidence “Adept-tec provides consultancy, manages complex archiving solutions and migrations into new or existing archiving platforms.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Strong evidence “DataMC UK specialises in highly complex data migrations, and in the end-to-end delivery of ERP, CRM, industry-specific, bespoke and business transformation projects.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Max Cloud Services are here to take your local or small business to the Cloud.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Strong evidence “Cottle.IT is a specialist company providing database development, data migration and business intelligence services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Cordapse helps organisations get more from their technology, faster.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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 migration consultancies. 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 migration consultancies.
- Partial evidence
- Its own public description names part of data migration consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data migration consultancies. 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 92 data migration consultancies based in the United Kingdom
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Data migration consultancies based in the United Kingdom at a glance
As of Sep 28, 2026Companies by employee count
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 92 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 migration consultancies, 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 “data migration consultancies”. 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 migration consultancies), 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 migration consultancies, 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, 279 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.
Data migration consultancies by metro
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 migration consultancies, 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 migration consultancies are there based in the United Kingdom?
RevenueBase identified 92 data migration consultancies 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?
Transvault, headquartered in Clevedon, tops this list with the largest team on record.
Which city has the most data migration consultancies?
London leads with 27 headquartered companies, followed by Manchester (4) and Cardiff (3).
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 279 verified decision-maker contacts tracked across these 92 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.
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