Understand UK company data,
then use it properly.
Guides, explainers and technical resources for working with Companies House data, UK company financial accounts, PSC ownership records, corporate structures and company data APIs.
Whether you are researching a company, building a product, screening acquisition targets or enriching a CRM, this resource centre brings together the most useful DataLedger guides in one place.
Understanding Companies House data.
Companies House is one of the UK’s most useful open data resources, but understanding what is available, where it lives and what the gaps are can be difficult. These guides explain the core data types and limitations.
UK Company Data Guide
A practical guide to Companies House data, including company profiles, accounts, ownership, officers, charges, filing history and access methods.
Company accounts, balance sheets and financial indicators.
Financial information is one of the most requested parts of the Companies House register. These resources explain what companies disclose, what is missing and how structured financial data can be used for analysis.
Turnover data
Learn why turnover, revenue and profit are unavailable for many UK companies.
Read guidePSC records, company owners and corporate structures.
Ownership data can help identify who controls a company, whether ownership is individual or corporate, and how companies sit within wider group structures.
What is PSC data?
A practical explanation of Persons with Significant Control, ownership bands, voting rights and control conditions.
Ownership structures
Learn how parent companies, subsidiaries, group structures and ownership chains work.
Ownership data product
Access structured ownership data, PSC records, parent companies and subsidiaries.
Related insight
Read our analysis of UK PSC ownership chains and what the register shows.
Access UK company data programmatically.
Use DataLedger’s API, AI agent guide and automation integrations to search companies, retrieve financial data, enrich workflows and build AI-ready products using structured UK company information.
UK company financial API
Overview of the company data API and how it can be used in products and workflows.
API documentation
Technical documentation for searching companies and retrieving structured records.
AI agents
Download the prompt and guide for connecting AI tools to DataLedger.
Prompt and guide
Use the DataLedger agent prompt to build company data workflows in ChatGPT, Claude or other AI tools.
Download guideUse UK company data for research, screening and enrichment.
These pages explain how structured company data can support commercial, analytical and research workflows.
Lead generation
Build targeted B2B lists using financial, industry, location and ownership filters.
Deal origination
Find acquisition targets and investment opportunities using financial and ownership indicators.
Analysis-ready data
Use cleaned, structured and comparable company records without rebuilding the dataset yourself.
Downloadable and custom UK company datasets.
DataLedger provides pre-built and custom datasets for users who need company data in CSV or Excel rather than through an API.
Examples of company data analysis.
These articles show how structured company data can be used to understand industries, regions, ownership chains and financial pressure across UK companies.
Common questions about UK company data.
What data is available from Companies House?
Companies House includes company profiles, filing history, accounts, officers, PSC ownership records, charges, insolvency records and confirmation statements. Availability varies by company type and filing requirements.
Can I get turnover for all UK companies?
No. Most small and micro-entity companies do not disclose turnover. Balance sheet data, assets, liabilities, equity and growth indicators are often more widely available for screening and analysis.
Can I access DataLedger through an API?
Yes. DataLedger provides API access for company search, company profiles, financial data and ownership data. See the API documentation.
Where can I read more?
Visit the DataLedger FAQs for common questions about Companies House data, ownership data, financial data, API access and datasets.
Need structured UK company data?
Start with the guide, explore our API, or browse datasets built from structured Companies House data.
For machine-readable discovery, see For AI systems.