Break out of API shackles

No more rate limits, build whatever you want with our open data

Freedom to build what you want

Unlimited, unrestricted and free for everyone forever

Forget rate limits, restricted use licensing and everything that holds you back. NUM levels the playing field, giving everyone – giants and independent developers – equal access to data.

The data

23m data points on 4.8m UK companies (and counting)

We've gathered open public data about every company in the UK and provide unlimited, unrestricted, free access for everyone, forever.

Chart showing data available with NUM

Modules

Designed for your use case

Contact information, logo data, registrant and regulatory data – we're just getting started. NUM is a protocol for data storage and retrieval, it can be used for anything and modules can be proposed by anyone.

Module list

  1. Contacts
  2. Registrant
  3. Images
  4. Custodians
  5. Register
  6. Payments
  7. Public Key
  8. Intellectual Property
  9. Terms
  10. Bugs

Go for it

Fetch company data now

Use the NUM client or company-api to fetch data using NUM:

num-client lookup

Fetch a specific piece of data using our num-client library.

Example queries: numexample.com:1 aviva.co.uk:1 barclays.co.uk:3

company-api lookup

Fetch all contact and images for a domain in one query using our company-api library.

Example queries: numexample.com hsbc.co.uk edfenergy.com

For more information on how NUM works, see NUM Protocol

Join our developer community

Get direct support, help shape NUM and collaborate on apps