Nationality, Immigration and Asylum Act 2002 — section 117B
(1) The maintenance of effective immigration controls is in the public interest.
(2) It is in the public interest, and in particular in the interests of the economic well-being of the United Kingdom, that persons who seek to enter or remain in the United Kingdom are able to speak English, because persons who can speak English—
(a) are less of a burden on taxpayers, and
(b) are better able to integrate into society.
(3) It is in the public interest, and in particular in the interests of the economic well-being of the United Kingdom, that persons who seek to enter or remain in the United Kingdom are financially independent, because such persons—
(a) are not a burden on taxpayers, and
(b) are better able to integrate into society.
(a) are, and are likely to remain, financially independent,
(b) are, and are likely to remain, able to house themselves (and any dependent family members) adequately without reliance on state support, and
(c) are not, and are not likely to become, reliant on public services, in particular health or social care services, in the long-term,
because such persons are not likely to be a burden on taxpayers and are likely to be better able to integrate into society.
(3A) It is in the public interest, and in particular in the interests of the prevention of disorder or crime, that persons who seek to enter or remain in the United Kingdom—
(a) have not been convicted of a criminal offence (in the United Kingdom or elsewhere),
(b) have co-operated with immigration authorities and processes, and
(c) are otherwise of good character.
(4) Little weight should be given to—
(a) a private life, or
(b) a relationship formed with a qualifying partner,
that is established by a person at a time when the person is in the United Kingdom unlawfully.
(4) No weight should be given to a private or family life established by a person at a time when the person is in the United Kingdom and—
(a) they require leave to enter or remain in the United Kingdom but do not have it or obtained it by deception, or
(b) they are in serious breach of a condition attached to their leave to enter or remain.
(5) Little weight should be given to a private or family life established by a person at a time when the person's immigration status is precarious.
(6) In the case of a person who is not liable to deportation, the public interest does not require the person's removal where—
(a) the person has a genuine and subsisting parental relationship with a qualifying child, and
(b) it would not be reasonable to expect the child to leave the United Kingdom. Kingdom, and
(c) if the person were to be removed and the child were to remain in the United Kingdom, that would have a very significant and long-lasting adverse effect on the child.
(7) For the purposes of subsection (6)(b), it would not be reasonable to expect a child to leave the United Kingdom if (and only if) one or more of the following conditions are met—
(a) the child would not receive any education in the country to which the child is proposed to be relocated (the “new country”);
(b) there would be very significant obstacles to the child’s ability to adapt to or integrate into the new country;
(c) the child’s relocation to the new country would otherwise have a very significant and long-lasting adverse effect on the child.