After article 6 of the 1986 Order insert—
(6A)
(1) On each anniversary of the coming into force of the Sutton Harbour Revision Order 2010, the sum mentioned in article 6(1) shall alter in line with any movement (calculated to one decimal place) in CPI which occurred during the year that ended on the 31st December immediately preceding the anniversary in question.
(2) Any alteration that occurs under paragraph (1) shall be recorded in the next following annual statement of accounts prepared by the Board of the Company.
(3) In paragraph (1) “CPI” means the Consumer Price Index being the main measure of inflation published in the monthly publication of the Office for National Statistics known as “Monthly Digest of Statistics”, or any successor from time to time of that index.