Kevin,
Countries where the authorities in cases like this would realise that they needed to supply evidence of illegal status

Not true because there is no "evidence of illegal status" to supply. The system here and in every other country relies on evidence of legal status, and all countries expel people who have no such evidence.

Stop making excuses for stuff that not even Theresa May would now excuse, Keith.

What I have said is not an excuse, and the treatment of these people has been inexcusable. They were shamefully mistreated and I have said so all along.

I just object to it being politicised. The Windrush folk should never have been left without proof of status. No one government is to blame for that, and Labour started the "hostile environment" thing.