Paragraph 2
Where the person in question was last employed as mentioned above in a branch or part of an undertaking which (whether before or after the commencement of this Act) becomes, or becomes part of, some other undertaking, and either—
(a)
he has as a consequence become employed in that other undertaking; or
(b)
it is reasonable to suppose that he would as a consequence have become employed in that other undertaking if his employment had not been interrupted by his whole-time service,
paragraph 1 has effect as if that branch or part were itself an undertaking.