The River Thames (Hungerford Footbridges) Order 1999

26.  If BT suffers damage in consequence of the construction, use or failure of the works or any subsidence resulting from the works, the undertaker shall pay the cost reasonably incurred by BT in making good such damage, and shall indemnify BT against claims, demands, proceedings, costs, damages and expenses which may be made or taken against or recovered from or incurred by BT by reason or in consequence of any such damage, but—

(a) nothing in this paragraph shall impose any liability on the undertaker with respect to any damage to the extent that such damage is attributable to any act or omission of BT, its officers, servants, contractors or other agents; and

(b) BT shall give to the undertaker reasonable notice of any claim, demand or proceedings and shall make no settlement or compromise thereof without the consent of the undertaker, such consent not to be unreasonably withheld.