[mytailorisrich]

Same conclusion: You still have bills, tax bills, etc, so there is still no need for anything else if you wanted to keep things as simple as necessary.

> And proof of address is not a utility bill there, but either a form from your landlord or land register.

Because you've decided to do that, not because there is a practical requirement, which is my point.

[RandomLensman]

Not really, as you still need to show a passport that you and the bills go together (which is still conjecture, to be honest, if the name is common). Why have two things?

Edit: because the decision was to have a strong ID system, so when people show an ID with an address the confidence is high in that being correct.