The River Thames (Hungerford Footbridges) Order 1999

48.—(1) If any alterations or additions either permanent or temporary, to the pier are reasonably necessary during the construction of the specified works, or during a period of 12 months after the completion thereof, in consequence of the construction of the specified works, such alterations and additions may be carried out by LRT after giving the undertaker reasonable notice of its intention to carry out such alterations or additions and the undertaker shall pay LRT on demand the cost thereof as certified by the engineer, including in respect of permanent alterations and additions a capitalised sum representing any increase in the costs which may be expected to be reasonably incurred by LRT in maintaining, working and, when necessary, renewing any such alterations or additions.

(2) If the cost of maintaining, working or renewing the pier is reduced in consequence of any such alterations or additions, a capitalised sum representing such saving shall be set off against any sum payable by the undertaker to LRT under this paragraph.