Where it appears to a local authority that a person—
proposes to live, or is living, in the area of another local authority , or in the area of a local authority in Wales, they must inform that other authority.
Where a child who is accommodated in England—
ceases to be so accommodated after reaching the age of 16, the person by whom or on whose behalf the child was accommodated or who carries on or manages the home or hospital (as the case may be) must inform the local authority or local authority in Wales within whose area the child proposes to live.
Subsection (2) only applies, by virtue of any of paragraphs (b) to (g), if the accommodation has been provided for a consecutive period of at least three months.
In a case where a child was accommodated by or on behalf of a local authority, or a local authority in Wales, in the exercise of education functions, subsection (2) applies only if the authority who accommodated the child is different from the authority within whose area the child proposes to live.