In section 15 (qualifying activities), after subsection (2) insert—

“(2ZA)

Where an activity of a company is treated by subsection (1) of section 6D (NI rate activity treated as separate trade) as a separate trade, that activity is an activity separate from any other activity of the company.

(2ZB)

Where an activity of a Northern Ireland firm is treated by subsection (2) of section 6D as a separate trade for the purposes of the corporate partner calculation, that activity is for the purposes of this Part, so far as relating to the corporate partner calculation, an activity separate from every other activity of the Northern Ireland firm.”