50. The Council must repay to LUL all reasonable costs, charges and expenses reasonably incurred by LUL—
(a)in constructing any part of a specified work on behalf of the Council as provided by paragraph 40 or in constructing any protective works under the provisions of paragraph 41, including, in respect of any permanent protective works, a capitalised sum representing the cost which may be expected to be reasonably incurred by LUL in maintaining and renewing such works;
(b)in respect of the employment or procurement of the services of any inspectors, supervisory staff, signallers, watchkeepers and other persons appointed for inspecting, monitoring, 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 and to ensure the continued safe and efficient operation of LUL’s railway undertaking (including any relocation of works, apparatus and equipment necessitated by the specified works) and the comfort and safety of passengers;
(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 railway services of LUL 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 consequence of the construction or failure of the specified works; and
(e)in respect of the approval of plans and any supervision by the engineer of the construction of the specified works.