an amount representing the seller’s eligible ring fence profits for the reference accounting period, and

amounts representing the seller’s eligible ring fence profits for so many of the preceding accounting periods ending on or after 17 April 2002 as the seller and purchaser may determine.

paragraph 4 (limits on total TTH amount),

paragraph 11 (consecutive accounting periods), and

paragraph 12 (the transferred profits amount for an accounting period).

paragraph 13 for the meaning of “eligible ring fence profits”, and

paragraph 102 for the meaning of “reference accounting period” in relation to the seller.