The London Gateway Logistics and Commercial Centre Order 2007

11.—(1) If any alterations or additions, either permanent or temporary, to railway property are reasonably necessary during the construction of the specified works, any protective works under paragraph 5 or during a period of 12 months after the completion of the specified works in consequence of the construction of a specified work, such alterations and additions maybe carried out by Network Rail and if Network Rail gives to the Promoter reasonable notice of its intention to carry out such alterations or additions, the Promoter shall pay to Network Rail the reasonable cost thereof including, in respect of any such permanent alterations and additions, a capitalised sum representing any increase in the costs which may be expected to be reasonably incurred by Network Rail in maintaining, working and, when necessary, renewing any such alterations and additions.

(2) If the cost of maintaining, working or renewing railway property is reduced in consequence of any such alterations or additions referred to in sub-paragraph (1) a capitalised sum representing such saving shall be set off against any sum payable by the Promoter to Network Rail under sub-paragraph (1).