Government advisers estimate there is a 60 per cent chance that the scheme will be struck down when the UK Supreme Court delivers its judgment on the policy in the coming weeks.
Figures obtained by the Daily Mail show the organisation has sent 1,737 refugees to Rwanda since 2019 - including 134 just four months ago - as part of its emergency transit mechanism.
Hundreds of asylum-seeking children have gone missing from hotels managed by the British government, prompting calls for an investigation into the matter.