Change phone number can't access the code

I've changed phone numbers and can't receive the access codes to log in. Any advice about the best way to change it. Thanks

Hi,

You will need to select the link 'Problems receiving the code' and the link 'You can get help'.

Follow the online prompts.

You will be asked identification verification (IV) questions. Once you pass the IV questions you can update your security preferences.

These steps must be successfully completed before you can access your account.

If you have any issues you should contact our online services team:

Technical support with HMRC online services

Thank you.