An Emergency Travel Document (ETD) is generally only issued for a single one way trip back to the country issuing that document. And it is generally issued only to countries of which they are citizens. So, if the Sri Lankan embassy won't issue a full passport (something you will need to check with them) but just an ETD, then they can't travel back to the UK on that ETD.
This is what the Stockholm Embassy of Sri Lanka has to say on the topic. Presumably the Sri Lankan embassy in Oslo would have the same procedure.
Note that your family needs a proper travel document, such as a passport, to travel back to the UK (or indeed anywhere outside Sri Lanka, the land of their citizenship).
kaush261 wrote: ↑Mon Aug 26, 2024 12:57 pm
Given how unfortunate this situation is, is there any alternative way for them to enter the UK directly? Has anyone else experienced a similar situation? Any advice would be greatly appreciated.
If you are outside your country of citizenship(s), generally the only proof of identity that is accepted is a passport issued by your country of citizenship and you need one of those to travel. There are exceptions; refugees and asylum seekers, national IDs within the Schengen Zone, etc.
But your family will need to get full/proper passports to travel back to and reside in the UK.
I am not a lawyer or immigration advisor. My statements/comments do not constitute legal advice. E&OE. Please do not PM me for advice.