Largest UK Companies
Company register search for 18.2M+ United Kingdom companies, plus shareholder, officer and beneficial ownership records sourced directly from official government registries.
UK company register data lives with Companies House, linked to the PSC (People with Significant Control) register created under the Small Business, Enterprise and Employment Act 2015. Legal name, nationality, country of residence, and nature of control are free to search via the Companies House portal and API, though full date of birth and residential address stay restricted to AML-regulated entities. The ownership threshold is more than 25% of shares or voting rights, alongside separate conditions for control without a numeric test, and general partnerships without legal personality don't have to file at all. Companies House verifies identity directly since November 2025 under the Economic Crime and Corporate Transparency Act 2023; where a PSC is itself a corporate entity, tracing the natural person behind it still means walking the chain through foreign registries.
United Kingdom beneficial ownership guideTop Companies in United Kingdom
Live from the register. Every row opens the full record — officers, shareholders and resolved group structure.
Data Coverage
Record counts by data layer for United Kingdom, as of the last reconciliation.
Analysis
What this data actually tells you about United Kingdom
The UK never closed its People with Significant Control (PSC) register the way the EU did after the 2022 CJEU ruling — it isn’t bound by that ruling post-Brexit, and Companies House data has stayed openly searchable throughout. The tradeoff was verification: for two decades, almost anyone could register almost any name as a director with no identity check at all, and fictitious or stolen identities were repeatedly used to stand up shell companies. That changed on 18 November 2025, when the Economic Crime and Corporate Transparency Act’s identity verification requirement took effect for all new directors and PSCs, with a 12-month transition window for everyone already on the register.
Practically, this means UK ownership data is the most openly accessible of any major European jurisdiction, but records filed before November 2025 carry a real risk of an unverified identity behind them — the gap the reform is built to close, not one it has closed retroactively. The PSC and directors’ registers are also being folded directly into Companies House’s own central records rather than kept as separate company-level filings, a structural change worth tracking for anyone building automated UK screening.
United Kingdom company base, broken down
Charts render from live counts. Where coverage is partial, the excluded population is stated on the chart.
Companies by industry
NACE section level, live from official registries. Each bar links through to its own directory.
Company size, by disclosed headcount
By number of employees on file. Entities with no disclosed headcount are not counted in any band.
Enterprises by size category
UK private-sector business population by employee size band, start of 2024. Source: DBT/ONS Business Population Estimates, 3 Oct 2024.
Foreign-controlled entities
36,724 foreign-owned businesses operate in the UK non-financial business economy — 1.4% of the 2.5M businesses there, but 29.0% of gross value added (aGVA).
Who uses United Kingdom ownership data
The three checks this page's data is most often run for.
KYB onboarding
Verifying a United Kingdom counterparty means confirming the beneficial owner behind the entity and evidencing where that answer came from, not just pulling the registered name.
AML and sanctions screening
Sanctions exposure often sits above the operating company, in a holding layer registered elsewhere. Screening the local entity alone will not surface it; screening the resolved ownership chain will.
Supplier and credit risk
Only 4,000,273 United Kingdom entities have digitized accounts on file, so group membership is often a better solvency signal than a standalone balance sheet.
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring for United Kingdom companies — via API or a bulk data feed.
Frequently Asked Questions
How many United Kingdom companies are in Zavia's database?
Zavia holds 18.2M+ company records for United Kingdom, of which 5.8M+ (32%) are currently active on the register.
Who owns companies in United Kingdom, and is that information public?
UK company register data lives with Companies House, linked to the PSC (People with Significant Control) register created under the Small Business, Enterprise and Employment Act 2015. Legal name, nationality, country of residence, and nature of control are free to search via the Companies House portal and API, though full date of birth and residential address stay restricted to AML-regulated entities. The ownership threshold is more than 25% of shares or voting rights, alongside separate conditions for control without a numeric test, and general partnerships without legal personality don't have to file at all. Companies House verifies identity directly since November 2025 under the Economic Crime and Corporate Transparency Act 2023; where a PSC is itself a corporate entity, tracing the natural person behind it still means walking the chain through foreign registries.
Can I see a United Kingdom company's shareholders and corporate structure on Zavia?
Yes. Zavia holds 5.2M+ shareholder records for United Kingdom companies, with 988,851 ultimate parent relationships resolved for group-structure and ownership-chain mapping.
Can I find the directors of a United Kingdom company on Zavia?
Yes. Zavia holds 17.8M+ officer and director records for United Kingdom companies, sourced directly from the same official register as the company's own filing.
Can I look up a United Kingdom company's VAT number on Zavia?
Yes. Zavia holds 2.5M+ VAT records for United Kingdom companies, linked to the same registered entity as its company profile.
Can I access financial statements for United Kingdom companies on Zavia?
Yes. Zavia holds 4M+ digitized financial reports for United Kingdom companies, available through Zavia's enriched company data for verified users.
What document shows who owns shares in a United Kingdom company?
Share ownership in United Kingdom is disclosed through the Confirmation Statement (CS01), filed under the Companies Act 2006.
Does Zavia offer an API for United Kingdom company data?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United Kingdom, so company registration, shareholder, UBO, officer, and group-structure records can be queried programmatically instead of browsed one page at a time.
Is there a guide to verifying beneficial ownership in United Kingdom?
Zavia's United Kingdom beneficial ownership guide covers the register, the UBO threshold, and how to verify a company's ownership chain in more depth than this directory page.