The London Underground (East London Line Extension) (No. 2) Order 2001

16.  The Company shall repay to Railtrack PLC all reasonable costs, charges and expenses reasonably incurred by Railtrack—

(a) in constructing any part of the specified works on behalf of the Company as provided by paragraph 7 above or in constructing any protective works under the provisions of paragraph 8 above, including, in respect of any permanent protective works, a capitalised sum representing the costs which may be expected to be reasonably incurred by Railtrack in maintaining and renewing such works;

(b) in respect of the employment or procurement of the services of any inspectors, signalmen, watchmen and other persons whom it shall be reasonably necessary to appoint for inspecting, signalling, watching and lighting railway property and for preventing, so far as may be reasonably practicable, interference, obstruction, danger or accident arising from the construction or failure of the specified works;

(c) in respect of any special traffic working resulting from any speed restrictions which may, in the opinion of the engineer, require to be imposed by reason or in consequence of the construction or failure of the specified works, or from the substitution or diversion of services which may be reasonably necessary for the same reason;

(d) in respect of any additional temporary lighting of railway property in the vicinity of the specified works, being lighting made reasonably necessary by reason or in consequence of the construction or failure of the specified works; and

(e) in respect of the supervision by the engineer of the construction of the specified works.