Paragraph 2

A person who has been given leave to enter or remain in, the United Kingdom by the Secretary of State upon an undertaking by another person or persons pursuant to the immigration rules within the meaning of the Immigration Act 1971, to be responsible for his maintenance and accommodation and who has not been resident in the United Kingdom for a period of at least five years beginning on the date of entry or the date on which the undertaking was given in respect of him, whichever date is the later and the person or persons who gave the undertaking to provide for his maintenance and accommodation has, or as the case may be, have died