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Aiden Startup — Company formation

How to save your Companies House codes and date of birth in the app

To file on your behalf, for example your confirmation statement, Aiden needs three things only you have: your company code, your Companies House personal code and your full date of birth. You save them in the app, in Taxes → Codes.

Step by step

  1. Open the Taxes tab and tap Codes at the top. Companies House codes opens. You can also get there by tapping Your director personal code or Your Companies House code when they show as pending in Taxes, or the Your date of birth row marked Missing on Home
  2. Under Your company code, type the six characters and tap Save
  3. Under Your personal code, type the 11 characters together, with no spaces or hyphens, and tap Save
  4. Under Your date of birth, type it as day / month / year, for example 07/03/1988, and tap Save date

Once a code is saved, its card says Saved and only shows the first and last character. The date shows as Date of birth saved.

What each one is

  • Your company code: the six-character Companies House authentication code. It is your company’s signature: without it, Aiden cannot file anything on your behalf. Companies House posts it to the registered office address, and if you don’t have it, Aiden can request a new one
  • Your personal code: you get it when you verify your identity on GOV.UK, and it belongs to you, not to the company. If you don’t have it yet, tap Verify my identity on GOV.UK on the same screen
  • Your date of birth: Companies House only publishes the month and year, but filing needs the full date. You must be at least 16
⚠️ Important: until you save your personal code, the screen shows how many days are left until 18 November 2026, when the 12-month transition period ends. For a director, Companies House asks for the code in the company’s next confirmation statement.

How to get your personal code, step by step: How to verify your identity for Companies House.

View a saved code

In Taxes, tap Company and then CH authentication code. The app asks for your PIN before showing it, and then you can tap Copy code. Your personal code is on the same screen, under Identity verification. Once saved, the app doesn’t let you change it: if you typed it wrong, write to us from Settings → Support → Contact support or at support@aiden.es.

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