“Your removal from the United Kingdom is imminent”; and “you need to be detained while arrangements are made for your care”
“(i) The Secretary of State must intend to deport the person and can only use the power to detain for that purpose. (ii) The deportee may only be detained for a period that is reasonable in all the circumstances. (iii) If, before the expiry of the reasonable period, it becomes apparent that the Secretary of State will not be able to effect deportation within that reasonable period, he should not seek to exercise the power of detention. (iv) The Secretary of State should act with reasonable diligence and expedition to effect removal.”
‘as the power is given in order to enable the machinery of deportation to be carried out, I regard the power of detention as being impliedly limited to a period which is reasonably necessary for that purpose.’