Does DataLedger include turnover data?

Turnover is included where companies have disclosed it in their electronic filings. Larger companies typically file full accounts including a profit and loss statement with turnover. Smaller companies filing micro or abridged accounts may not disclose turnover. Where turnover is available it is included as standard in custom datasets and API responses.

What criteria can I use to filter a custom dataset?

Custom datasets can be filtered by sector or SIC code, geography, region, local authority, postcode, incorporation date, company age, assets, net assets, turnover where available, debt ratios, growth rates, employee count and ownership type. Ownership filters include PSC owner age range, individual versus corporate ownership, nationality, nature of control, parent companies and subsidiary structures.

How quickly can I get a dataset?

Most custom datasets are delivered within 24 to 48 hours of receiving the criteria. Pre-built sector datasets are available for immediate download. If a brief is complex or includes PSC ownership and corporate structure data, DataLedger confirms timing upfront.

Can I get ownership data included in a custom dataset?

Yes. PSC beneficial ownership data can be included in custom datasets, including PSC name, nationality, country of residence, nature of control, ownership band and year of birth. Datasets can also be filtered by ownership criteria such as owner age range, individual versus corporate PSC, parent companies and subsidiary structures.

What format are datasets delivered in, and can I use them commercially?

Custom datasets are delivered as Excel or CSV. Pre-built datasets are delivered as Excel. All datasets include a commercial use licence as standard. API responses are returned as JSON.

How much does a custom dataset cost?

Custom datasets with financial data start at £295. PSC beneficial ownership data can be added from £395. Pre-built sector datasets start from £195 for immediate download. API access starts from £10 per month with 25 free credits on signup and no card required to get started.

Can I get regular updates rather than a one-off dataset?

Yes. DataLedger can provide refreshed datasets monthly or quarterly as new accounts are filed. For teams needing real-time access, the API allows users to query company data at any time.

How does this differ from searching Companies House directly?

Companies House lets users search individual companies and download raw filing documents. DataLedger structures those filings into clean, comparable records that can be filtered across millions of companies and delivered as a ready-to-use spreadsheet or API response. DataLedger also combines financial data with PSC ownership records, parent companies and subsidiaries.

UK company data from Companies House

Find exactly the companies you're looking for.

Filter millions of UK companies using the financial, ownership and business criteria that matter to you. Get precisely the data you need, ready to analyse, enrich or integrate into the tools you already use.

Get a custom dataset Get in touch

Explore the API Connect your AI

Built by data engineers with years of experience processing Companies House data, including for government clients. Used by M&A advisers, acquirers, sales and BD teams, and data platforms.

Example searchOver 5m companies in scope

Each dot is a company. Counts illustrative.All UK companies

Excel or CSV, delivered within 24 hours. Ready for Excel, HubSpot or Salesforce.

Company

Assets

Growth

Owner

Age

Example Fabrication Ltd

£4.2M

+12%

Individual

Example Precision Ltd

£7.8M

+6%

Individual

Example Castings Ltd

£2.9M

+9%

Individual

Illustrative data, not real companies. The same shortlist in every view.

What is DataLedger? DataLedger is a UK company data platform. It turns Companies House filings into structured financials, ownership records and group structures, available as custom datasets, an API and an MCP server for AI agents.

What you get

From millions of companies to the few that fit.

Four things DataLedger does for people who find, evaluate and approach UK companies.

Find exactly the companies you need

Filter millions of UK companies by financial, ownership, industry and location criteria to create a shortlist that matches your exact requirements.

Get the information that matters

Go beyond basic company details with enriched information, including ownership structures and key financials, to better understand and evaluate the companies you're interested in.

Make your existing tools and data more powerful

Enrich your datasets, AI workflows and applications with structured company information, available via spreadsheet, API or MCP integration. Combine it with your existing data, or use it to build your own reports, tools and applications.

Spend less time searching. Move faster.

Skip hours of manual research with company information that's ready to use. Identify opportunities and act on them sooner.

Manual research: can take weeks

Custom dataset: within 24 hours

API and MCP: immediate after set up

The problem with raw filings

Filings nobody can compare, turned into one table you can filter.

Companies House holds the facts, but every set of accounts looks different and there is no bulk filter. DataLedger structures them into one consistent record per company.

→structured
and linked

Company

Assets

D/E

Owner type

Age

Example Fabrication Ltd

£4.2M

0.4

Individual

Example Logistics Ltd

£11.5M

0.9

Corporate

n/a

Example Castings Ltd

£2.9M

0.2

Individual

Three ways to get the data

Same companies. Choose how they reach you.

Every route returns the same shortlist from the same data. The difference is where it lands.

Spreadsheet

A custom dataset, built to your brief

For analysts and business development teams who want a clean list in Excel or their CRM.

Company | Assets | Owner | Age Example Fab. Ltd | £4.2M | Ind. | 63 Example Prec. | £7.8M | Ind. | 58

From £295, or £395 with PSC ownership. Up to 5,000 companies, delivered within 24 hours.

Request a dataset

API

Live data inside your own product

For product and data teams who want to enrich their own records, reports and applications in real time.

GET /v2/companies/:companyNumber?people=true&parents=true "people": [{ "dobYear": 1962, "naturesOfControl": ["ownership-of-shares-75-to-100-percent"] }], "parents": [{ "depth": 1, "isUltimateParent": true }]

Immediate after set up. 25 free credits, no card needed. Plans from £10 per month.

Explore the API

AI and MCP

Ask your AI for the companies you need

For people who already use an AI agent. Describe the companies you want in plain English. It looks them up in the real records and answers with owners, ages and figures.

You: Find profitable manufacturers in Scotland owned by one person in their 60s.
AI: I found 48. Here are the first three, with their owners and the filed accounts behind each answer.

Immediate after set up. Works with MCP-compatible agents, tested with Claude.

Connect your AI

DataLedger and AI

AI is the interface. DataLedger is the record.

AI agents, tools that can take steps for you like searching and reading records, are good at understanding what you mean, but they do not hold UK company data, so they guess. DataLedger connects your agent to the Companies House record, so it looks things up instead. You do not need to be technical to use it.

Example conversation. Illustrative companies and figures.

You

I'm looking for profitable manufacturing companies in Scotland, owned by one person in their late 50s or 60s, with no parent company. Can you find some?

Your AI agent

Manufacturing companies in Scotland38,400

Assets of £1M to £20M, accounts in profit4,260

One individual owner, aged about 55 to 70610

No corporate parent48

I found 48 companies that fit. Here are the first three:

Example Fabrication Ltd, Falkirk. Assets £4.2M, up 12%. Owner aged about 63 holds 75 to 100% of the shares.
Example Precision Ltd, Livingston. Assets £7.8M, up 6%. Owner aged about 58 holds 75 to 100% of the shares.
Example Castings Ltd, Dundee. Assets £2.9M, up 9%. Owner aged about 66 holds 75 to 100% of the shares.

You

Which of those have grown in each of the last two years?

Your AI agent

19 of the 48 grew their assets in both years. Example Fabrication Ltd is the strongest. Would you like all 19 as a table to paste into Excel, with owner, age and the date of the accounts?

No technical skills neededYou ask the way you would ask a colleague. Your agent works out the searching.

Answers you can checkEvery result comes from a filed record, so you can see where it came from before you rely on it.

Keep askingNarrow the list, compare companies or change your criteria without starting again.

Works with the AI you already useTested with Claude, and works with other agents that support MCP, the standard that lets an assistant use outside data.

How to start

Add DataLedger to your AI agent.
Paste in your API key. 25 free credits to begin, no card needed.
Start asking.

See the set-up guide

Ownership

Find the person at the top of the chain.

Control often sits several layers above the trading company. DataLedger follows the registered chain to the ultimate owner and tells you whether that is an individual.

Ultimate owner, individual

A. ExampleAge 63, control band 75 to 100%

Depth 2, holding company

Example Holdings Ltd

Depth 1, immediate parent

Example Group Ltd

Your target company

Example Fabrication LtdAssets £4.2M, growth +12%

Individual or corporateEvery owner is flagged, so you can filter for owner-managed businesses.

Age and controlApproximate age and ownership band for each person with significant control.

Parents and subsidiariesFollow the chain up and down, as far as it is registered.

Clear about the edgesWhere the register ends at a trust or an overseas entity, the chain stops there and the record says so.

Companies House API alternative

What DataLedger adds to the free Companies House API.

The Companies House API is free and DataLedger is built on the same open data. It is the right tool for looking up one company you already know. DataLedger is for finding companies you do not know yet.

Free Companies House API

DataLedger

What you get

Raw filings and registers, one company at a time

One consistent, structured record per company, with financials, ratios and growth

Finding companies

Search by name, with limited filters

Filter millions of companies by financials, ownership, industry and location

Ownership

PSC records, and you trace the chain yourself

Individual or corporate flagged, approximate age, and parents and subsidiaries with depth

How you receive it

API

Custom dataset, API, or an MCP server for AI agents

Cost

Free

Datasets from £295. API plans from £10 per month, with 25 free credits to start

Looking for another option? See how DataLedger compares with other Companies House MCP servers.

The data at a glance

Exactly what is in the data, and where it comes from.

The coverage, the source and the limits, stated plainly.

Companies on record

Over 5 million UK companies

With financials

Over 3 million, from electronically filed accounts

Years per company

Current year and prior year comparatives

Ownership

PSC records, parents and subsidiaries

Source

Companies House filings

Updates

Counts change daily as new filings arrive

Not covered

Companies without electronically filed accounts. R&D data.

Award

Leading Company Data Platform 2026SME News UK Finance Awards 2026

Registered company

Registered in Scotland, company number SC857647

Data protection

Built only from open data sourcesEvery field comes from public Companies House records, which keeps what we hold within what is already published.

Used by

M&A advisers, acquirers, sales and BD teams, and data platforms

Contains public sector information licensed under the Open Government Licence.

Questions

Common questions about UK company data

How can I find UK companies by owner and financial criteria?

DataLedger combines Companies House financials with persons with significant control records. You can filter by industry, location, size, owner type and approximate owner age, then receive the shortlist as a spreadsheet, through the API or via an AI agent.

How do I find UK companies where the owner is approaching retirement?

Filter for companies with an individual owner in a given age range, then add financial criteria such as assets and growth. DataLedger records the approximate age of each person with significant control, so you can build a shortlist of owner-managed companies by owner age, as a spreadsheet, through the API or by asking an AI agent.

Is there a Companies House API alternative with financials and ownership?

Yes. The free Companies House API returns raw filings one company at a time. DataLedger is built on the same open data and adds structured financials, ratios and growth, owner type and age, and ownership chains, with filtering across millions of companies. It is available as custom datasets, an API and an MCP server.

Can I get UK company data into Excel or my CRM?

Yes. A custom dataset is delivered as an Excel or CSV file within 24 hours, ready to open in Excel or import into a CRM such as HubSpot or Salesforce. Datasets start at £295 for up to 5,000 companies.

Where does DataLedger's company data come from?

It is built from Companies House filings: electronically filed accounts and the PSC register. Financial figures exist for over 3 million companies that file accounts electronically, out of over 5 million on record. Counts change daily as new filings arrive.

How much is a custom UK company dataset and how long does it take?

Custom datasets start at £295 with financials, or £395 with PSC ownership included, for up to 5,000 companies. Delivery takes 24 hours, with a commercial licence.

Can I use DataLedger with Claude or another AI agent?

Yes. The DataLedger MCP server connects MCP-compatible AI agents to the same data as the API, and is immediate once set up. It has been tested with Claude. Describe the companies you want and the agent queries filed accounts and registered owners.

Can I see who ultimately owns a UK company?

DataLedger follows the registered ownership chain up through parent companies to the ultimate owner. Where the register ends at a trust or an overseas entity, the chain stops there and the record says so.

Do I need to be technical to use DataLedger with AI?

No. Setting up the connection is a one-off step, after which you type questions in plain English and your AI agent looks up the answers in the Companies House records. It can also put the results in a table for Excel.

Is DataLedger a replacement for AI tools?

No. AI is the interface and DataLedger is the data it queries. Together they give answers that trace back to a filed record.

Ready to find the right companies?

Send a brief, connect through the API, or ask your AI. Or get in touch and we will scope it with you.

Request a custom dataset Get in touch

Explore the API Connect your AI

contact@dataledger.uk

Last reviewed 26 October 2026

Find exactly the companies you're looking for.

From millions of companies to the few that fit.

Find exactly the companies you need

Get the information that matters

Make your existing tools and data more powerful

Spend less time searching. Move faster.

Filings nobody can compare, turned into one table you can filter.

Same companies. Choose how they reach you.

A custom dataset, built to your brief

Live data inside your own product

Ask your AI for the companies you need

AI is the interface. DataLedger is the record.

Find the person at the top of the chain.

What DataLedger adds to the free Companies House API.

Exactly what is in the data, and where it comes from.

Common questions about UK company data

Ready to find the right companies?

Company Data

API & AI

Use Cases

Resources