Access UK company financials through our API

Integrate structured Companies House data into your applications without building your own database. Search by assets, equity, industry codes, and location through simple REST endpoints.

Key Benefits:

  • Production-ready endpoints - Same intelligence that powers CHat

  • Skip infrastructure costs - No need to build and maintain your own Companies House database

  • Structured financial data - Key reporting figures and key ratios, ready to use

  • Daily updates - Fresh company data from Companies House filings

What is the DataLedger API?

The DataLedger API provides programmatic access to structured UK company financial data sourced from Companies House. Instead of downloading, parsing, and maintaining raw company filings yourself, use our REST endpoints to search and retrieve company information by business criteria.

Perfect for:

  • CRM enrichment - Add company financial data to your customer records

  • Lead scoring - Qualify prospects based on company size and financial health

  • Compliance tools - Automated due diligence and risk assessment

  • Business intelligence - Market analysis and competitor research

  • Fintech applications - Credit scoring and financial services

How it works:

  1. Search companies by total assets, equity, SIC codes, location, or name

  2. Get structured data including balance sheet key figures, ratios, and company profiles

  3. Integrate seamlessly with your existing systems and workflows

  • Smart Company Search

    Filter UK companies by financial criteria, industry classification, and geographic location. Find companies that match your exact business requirements.

  • Financial Intelligence

    Access structured balance sheet data, key financial ratios, and company performance metrics. No more parsing raw accounting documents.

  • Developer-Friendly

    RESTful API design with comprehensive documentation. Built for easy integration with modern applications.

  • High Performance

    Optimised endpoints with intelligent caching and rate limiting. Designed for production applications that need reliable, fast responses.

What’s endpoints are available in the DataLedger API?

Three yellow icons on a black background representing search, finance, and communication tools.

• Autocomplete: Instantly search by company name as users type

• Search: Filter live companies by name, SIC code, location, and financial thresholds like total assets and equity

• Profile: Retrieve a company’s address, status, reporting dates, latest financials and key ratios

How the DataLedger Credit System Works

DataLedger uses a simple, unified credit system.

Credits power every search, insight, and API call - whether you use our CHat interface or connect to our DataLedger API.

Your credit balance updates instantly and is visible in your account at all times.

FeatureCredit Cost
Autocomplete Search
Company name suggestions for faster search.
API endpoint: /companies/autocomplete
Chat: Triggered when you start typing a company name.
1 credit = 25 calls
Company Search
Get detailed company results with filters.
API endpoint: /companies/search
Chat: Triggered by plain-English queries like “Show me tech companies in Manchester.”
1 credit per call
Company Profile Lookup
Retrieve full profile & latest financials by company number.
API endpoint: /company/company_number
Chat: Enter a valid UK company number in the chat, use the Quick Lookup or click on a company to get the financials.
1 credit per call
Insight Reports
In-depth analysis and financial insights.
API endpoint: /companies/insight
Chat: Triggered when you request a company “insight” or ask for a financial summary.
3 credits per report

Flexible Plans

  • Free Trial:
    25 credits for every new user. No credit card required.

  • Pay As You Go:
    Buy credits as needed for your API and chat usage.

  • Monthly Subscription:
    Receive a set number of credits each month for both API and CHat, or choose the Business Plan for unlimited* usage.

Q&A

Q: Can I use credits in both the API and chat?
A: Yes, credits work for every DataLedger feature, whether you use our CHat (plain-English interface) or integrate with the DataLedger API.

Q: What does one credit give me?
A: One credit covers a full company search, a profile lookup, or 25 autocomplete searches. Three credits unlock an in-depth insight report.

Q: How do I track my usage?
A: Your credit balance is always visible in your account, and updates instantly after each action.

Q: Can I start for free?
A: Yes, every new user receives 25 free credits to try all features.

Q: Where can I see API documentation?
A: View API Docs

Q: What does "*unlimited usage" mean in the Business Plan?

A: The Business Plan provides unlimited credits within our fair usage guidelines. You're still subject to a 50,000 credits per hour rate limit to ensure reliable service for all users, but you won't be charged for additional credits beyond your monthly allocation.

Q: What are the rate limits?

W: All users have a rate limit of 50,000 credits per hour, calculated on a rolling basis. If you exceed this limit, you'll receive error responses and need to wait for the rate limit to reset. This ensures optimal performance for everyone.

Q: Can I use the data commercially?

A: Yes! You can use the data for any lawful commercial purpose, including redistribution to third parties. The underlying data comes from public sources (Companies House and ONS), so you have full commercial usage rights.

Q: What if I need higher limits for my business?

A: If you have legitimate business requirements that exceed our standard limits, contact us at contact@dataledger.uk. We can discuss custom enterprise plans, bulk data exports, or dedicated infrastructure for high-volume users.

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Why Use DataLedger?

  • Instant access to UK Companies House financial data

  • Search, analyse, and generate insight reports in plain English or via API

  • One clear credit system for chat and API

  • Transparent pricing—no surprises

Enterprise-grade pricing

  • Starter

    £5.00 - One-time purchase

    100 credits

    Full API access

    CHat (Companies House Accounts Translator)

  • Pro

    £10.00 - One-time purchase

    250 credits

    Full API access

    CHat (Companies House Accounts Translator)

  • Pro Plan

    £10.00/month

    300 credits

    Monthly renewal

    Full API access

    CHat (Companies House Accounts Translator)

  • Business Plan

    £20.00/month

    2,000 credits

    Monthly renewal

    Full API access

    CHat (Companies House Accounts Translator)

    Unlimited usage*