Company lists · Data refreshed November 2026

Top 25 Data quality services based in the United Kingdom

RevenueBase identified 70 company matches for data quality services associated with the United Kingdom as of November 2026 and tracks 602 professional contacts across them, including 323 with verified work emails. London is the largest hub.

This list covers company matches for data quality services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
70Companies
602Contacts tracked
323Verified emails
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The 25 largest data quality services based in the United Kingdom

Ranked by team size
Top 25 of 70 company matches for data quality services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Seriös Group are experts in data solutions, helping businesses to take control of their data, delivering rapid value without compromise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHackney, United KingdomHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Convertr is the enterprise data integrity layer that ensures clean, compliant, and complete data flows across systems and teams to support AI-readiness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchChester, United KingdomHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“THE DATA QUALITY COMPANY Data8 is an award winning data quality management company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGrangemouth, United KingdomHQ recorded Nov 6, 2026n/a32 contacts →

Exact match

“At Precision Data Solutions, we understand the pivotal role that data plays in driving strategic decisions and enhancing operational efficiencies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“LeadScale provides the greatest leverage to any business – the ability to use personal data to identify more opportunities earlier, driving revenue at scale.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchNorwich, United KingdomHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Transform your business with data quality solutions from Allies Computing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPortsmouth, United KingdomHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“DQ Global is a data quality management company with a mission to empower organisations worldwide to achieve more with their customer data.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWymondham, United KingdomHQ recorded Nov 6, 20261-1014 contacts →

Exact match

“We know that the relationship with your customers is vital.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Cirrom is the governance layer your CRM was never shipped with.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSouthampton, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“We are a Data Bureau are committed to helping our clients enhance their strategy, operation and connection with their customers through the power of optimised data.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Your business is only as strong as your data.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-507 contacts →

Exact match

“PowerServe Systems is an information technology and services company specialising in Business Intelligence, Data Analytics and Data Science.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact match7 Bell Yard, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Do you use a Data Cleaning Checklist or just go through the motion to get it ready?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBirmingham, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Do you consider your data to be an asset?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNewbury, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Blue Tortoise provides intelligent data analysis, sourcing and management to help B2B organisations fulfil their sales and marketing strategies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchChatham, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Accurate, relevant data is the key to any successful marketing programme.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCorsham, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Data Enhancement Solutions was formed by 3 people with a combined experience of over 50 years in the data industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“DCI provides data validation tools for financial services firms who face complex challenges, from increasing client demands and constant regulatory change, to cost pressures…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Phusis is a data-centric, business solutions company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-103 contacts →

Exact match

“At Business Intelligence Theorems, we help businesses maximise data performance by focusing on outcomes that truly matter.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOxford, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Progressive Data have a passion to get your data working for you and have the skills and experience to do so.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGuildford, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“We’ve a combined total of more than 40 years in data classification, your data is safe with The Classification Guru.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchEynsham, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“We are passionate about people, data and the process of bringing them together to unlock the data potential within organisations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSoutham, United KingdomHQ recorded Nov 6, 202611-502 contacts →

Exact match

“Oblong UK was formed in 2006, providing SIC coding and data cleaning services, but has since evolved to provide a full spectrum of business data services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHemsworth, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Informate UK Limited provide a comprehensive bureau service to assist in the area of Data Cleansing, Enhancement, Suppression and Data Supply.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 70 data quality services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 323 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Data quality services based in the United Kingdom at a glance

As of Nov 6, 2026
53.7%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
34.3%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
18
51-200
5
201-500
1

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 70 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “data quality services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 323 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “data quality services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many data quality services are there based in the United Kingdom?

RevenueBase identified 70 company matches for data quality services associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Seriös Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most data quality services?

London leads with 24 company records, followed by Corsham (2) and Portsmouth (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 323 professional contacts with verified work emails tracked across these 70 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.