Australian Dual Citizens Entering UK after February

[MEL_Traveller]

Eurostar will check ETAs electronically before they let you into the secure area.

If you manage to have a valid ETA in a foreign passport despite being a British citizen, nothing will be different.

France does not care about the UK's rules. In fact, having Eurostar enforce the ETA helps France.

Previously, France would not know who might be refused entry to the UK. Now, the majority of people who would have been denied entry to the UK, will be filtered out by Eurostar's ETA checks, so they won't even get to the exit controls of France.

Yes. That’s logical.

I guess it’s the same in most places… the airline/carrier does the checks… the actual passport control doesn’t!