5. The second set of conditions is—
(a)that the area has recently experienced or is experiencing an influx of migration into it;
(b)that a significant number of the properties referred to in article 3(1)(a) are occupied by those migrants referred to in paragraph (a); and
(c)that making a designation will, when combined with other measures taken in the area by the local housing authority, or by other persons together with the local housing authority, contribute to—
(i)the preservation or improvement of the social or economic conditions in the area; and
(ii)ensuring that the properties referred to in article 3(1)(a) are properly managed, and in particular, that overcrowding is prevented.