“391. In the case of a person who has been deported following conviction for a criminal offence, the continuation of a deportation order against that person will be the proper course: (a) in the case of a conviction for an offence for which the person was sentenced to a period of imprisonment of less than 4 years, unless 10 years have elapsed since the making of the deportation order when, if an application for revocation is received, consideration will be given on a case-by-case basis to whether the deportation order should be maintained, or (b) in the case of a conviction for an offence for which the person was sentenced to a period of imprisonment of at least 4 years, at any time, Unless, in either case, the continuation would be contrary to the Human Rights Convention or the Convention and Protocol Relating to the Status of Refugees, or there are other exceptional circumstances that mean the continuation is outweighed by compelling factors.”
“The fact that a period of ten years has elapsed since the making of the order creates a presumption that the order will be discharged unless, having considered the individual facts of the case, the Secretary of State considers that it continues to be in the public interest to maintain the order.”
“…. While under paragraph 391 there is a presumption that continuation of the deportation order “will be the proper course” if less than 10 years have elapsed, there is no presumption either way after the 10 years have elapsed. Paragraph 391 simply requires each case to be considered on its merits, taking account of applicable paragraphs of the Rules, including most ` obviously paragraph 390, and the applicable statutory provisions. The effect of the expiry of 10 years is only that the previous presumption in favour of maintaining the order falls away…”
“[…] the decision under review has involved the application of rules which have been made by the Secretary of State in the exercise of a responsibility entrusted to her by Parliament, and which Parliament has approved. It is the duty of appellate tribunals, as independent judicial bodies, to make their own assessment of the proportionality of deportation in any particular case on the basis of their own findings as to the facts and their understanding of the relevant law. But, where the Secretary of State has adopted a policy based on a general assessment of proportionality, as in the present case, they should attach considerable weight to that assessment”