21(1)For the purposes of this Schedule, the “accountancy rental earnings” in respect of the lease for a period of account of the lessor is the greatest of the amounts specified in sub-paragraph (2) below.
(2)Those amounts are—
(a)the rental earnings for the relevant period in respect of the lease, in the case of the lessor;
(b)the rental earnings for the relevant period in respect of the lease, in the case of a person connected with the lessor;
(c)the rental earnings for the relevant period in respect of the lease, for the purposes of consolidated group accounts of a group of companies of which the lessor is a member.
(3)In sub-paragraph (2) above, “the relevant period” means the period of account of the lessor which is mentioned in sub-paragraph (1) above.