None of those Declarations etc. are enforceable in practice, though. If the government decides not to assist an asylum seeker, the only protection they have is through the ECHR.
In the leading case I mentioned from 2003, the Labour government had cut off all support for certain groups of asylum seekers. Some of these asylum seekers became homeless and had to resort to begging. The policy was challenged and the case went to the Court of Appeal.
The government lost the case on some of the procedural issues around how each asylum seeker was assessed. But regarding the level of support asylum seekers were entitled to receive, the only legal issue was how bad a state of degradation did the asylum seekers have to reach before it amounted to "inhuman or degrading treatment" under the ECHR.
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