How to receive the client_id and client_secret

I created a developer account, created a new application but didn’t get my client_id and client_secret

Created the key, received a api_key… this is equivalent a client_secret?

Did I forget a step?

There are (at least) two different ways of authenticating / authorising for Companies House. Which you use depends on which Companies House API you are connecting to.

The API key is used - with the http Basic authorization method - for the following:

A client Secret / ID sound like you’re referring to the OAuth method. That’s used with:

If you are using the first method (API key) you will find their documentation here. There is plenty of information on this forum also (you can search using the “magnifying glass” icon at the top right).