16(1)Sub-paragraph (2) applies if—
(a)before the whole of an amount has been treated by paragraph 13 as arising, the lessee permanently ceases to carry on activities the profits of which are chargeable to income tax or corporation tax, and
(b)the whole of the amount so far as not treated by paragraph 13 as arising is not treated by paragraph 15(2) as arising to a transferee.
(2)The amount so far as not otherwise treated as arising—
(a)is to be treated as arising to the lessee, and
(b)is to be brought into account in calculating the profits of the lessee,
immediately before the cessation.