Company lists · Data refreshed September 2026
Top 25 Ombudsman services worldwide
RevenueBase identified 392 ombudsman services worldwide as of September 2026 and tracks 13,473 professional contacts across them, including 4,714 with verified work emails. The United Kingdom is the largest market and London the largest hub.
This list covers ombudsman services worldwide, 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 20, 2026. Country and city lists for ombudsman services follow the table.
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 ombudsman services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,288 contacts → | ||||
Indirect evidence “We’ve been sorting out complaints between financial businesses and their customers since we were set up by Parliament in 2001.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,379 contacts → | ||||
Indirect evidence “Associazione difesa consumatori” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,008 contacts → | ||||
Indirect evidence “The Australian Financial Complaints Authority (AFCA) is the one-stop-shop for consumers and small businesses with a complaint about banking, credit, insurance, superannuation…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 641 contacts → | ||||
Indirect evidence “The Netherlands Authority for Consumers and Markets (Autoriteit Consument & Markt) is an independent authority that creates opportunities and options for businesses and consumers…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 347 contacts → | ||||
Strong evidence “Energy Ombudsman (formerly Ombudsman Services) provides a free and easy to use dispute resolution service for consumers in the energy sector.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 337 contacts → | ||||
Indirect evidence “Our role is to investigate complaints that individuals have been treated unfairly or have received poor service from government departments and other public organisations and the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 231 contacts → | ||||
Indirect evidence “Our mission is to improve landlords’ services and residents’ lives through housing complaints.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 198 contacts → | ||||
Indirect evidence “De burger heeft er recht op behoorlijk behandeld te worden door de overheid.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 191 contacts → | ||||
Strong evidence “The Legal Ombudsman (LeO) resolves complaints about providers of legal services that haven’t been resolved to customers’ satisfaction – as quickly and informally as possible.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 181 contacts → | ||||
Strong evidence “The Telecommunications Industry Ombudsman provides a free and independent external dispute resolution service for residential consumers and small businesses who have an unresolved…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 174 contacts → | ||||
Indirect evidence “Le Protecteur du citoyen prévient et corrige les erreurs ou les injustices commises à l’égard de toute personne ou groupe de personnes en relation avec un ministère, un organisme…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 162 contacts → | ||||
Indirect evidence “Klachten te allen tijde voorkomen, soms lukt dat niet.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 151 contacts → | ||||
Strong evidence “Trust Alliance Group was formed in 2022 and comprises of several businesses that were previously part of Ombudsman Services, including the Energy Ombudsman, Communications…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 114 contacts → | ||||
Strong evidence “The Ombudsman helps New Zealanders deal with public sector agencies with a focus on fairness for all.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 103 contacts → | ||||
Indirect evidence “The National Board for Consumer Disputes (Allmänna reklamationsnämnden, ARN) is a public authority that functions roughly like a court.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 100 contacts → | ||||
Indirect evidence “Heb je een klacht over een financieel product of dienst, zoals een bankrekening, verzekering, hypotheek, lening of (klein)zakelijk krediet?” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 97 contacts → | ||||
Strong evidence “The Ombudsman is an independent, impartial office of the Legislature that resolves and investigates public complaints about Ontario government organizations and municipalities…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 96 contacts → | ||||
Indirect evidence “We are an independent organisation set up by law to investigate complaints about personal and occupational pension schemes administered in the UK.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 91 contacts → | ||||
Indirect evidence “OBSI is Canada’s trusted independent dispute resolution service for consumers and small businesses with a complaint they can't resolve with their banking services or investment…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 90 contacts → | ||||
Indirect evidence “The CAO is a government consumer protection organization that provides information, education and dispute resolution services for condo communities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 90 contacts → | ||||
Indirect evidence “FairWay Resolution Limited is an independent, employee-owned company providing specialist conflict management and dispute resolution services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 87 contacts → | ||||
Indirect evidence “Fair, Free, Impartial, Independent.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 84 contacts → | ||||
Indirect evidence “The purpose of the Health and Disability Commissioner is to promote and protect the rights of consumers as set out in the Code of Health and Disability Services Consumers' Rights.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 83 contacts → | ||||
Indirect evidence “Nasjonalt klageorgan for helsetjenesten er et forvaltningsorgan under Helse- og omsorgsdepartementet.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 74 contacts → | ||||
Indirect evidence “Forbrukertilsynet er et offentlig organ som fører tilsyn med forbrukervernreglene i markedsføringsloven, angrerettloven og en rekke andre lover.” Source: RevenueBase Database · checked Sep 20, 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: ombudsman services. 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 ombudsman services.
- Partial evidence
- Its own public description names part of ombudsman services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ombudsman services. 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 392 ombudsman services worldwide
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Ombudsman services worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 ombudsman services, 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.
- Coverage
- Every country. Country and city lists for ombudsman services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “ombudsman services”. 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 ombudsman services), 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 ombudsman services, and records with no verified work email.
- 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, 4,714 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 20, 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.
Ombudsman services by location
2 lists · largest firstEvery Ombudsman services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 ombudsman services, 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 ombudsman services are there worldwide?
RevenueBase identified 392 ombudsman services worldwide 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?
Financial Ombudsman Service, headquartered in London, tops this list with the largest team on record.
Which country has the most ombudsman services?
The United Kingdom leads with 55 companies, followed by Canada (28). Every ombudsman services list by country and city is linked on this page.
Which city has the most ombudsman services?
London leads with 12 headquartered companies, followed by Toronto (10) and Den Haag (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 4,714 verified decision-maker contacts tracked across these 392 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 20, 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.