(1) The methods of consolidation shall be applied consistently from one financial year to the next.
(2) If it appears to the directors of a parent undertaking that there are special reasons for departing from the principle specified in paragraph (1), they may so depart, but particulars of the departure, the reasons for it and its effect on the balance sheet and profit or loss of the parent undertaking and subsidiaries as a whole must be disclosed in the notes to the accounts.