You can prove your identity with a share code if you previously used the ‘UK Immigration: ID Check’ or ‘EU Exit: ID Document Check’ app when applying:
for a visa
to the EU Settlement Scheme
Get a share code from the view and prove your immigration status service. Choose the ‘something else’ option when you’re asked what you need the share code for.
Write the code on your application form. Do not send a physical identity document.