Channel Tunnel Act 1987

11 The appropriate authority shall repay to the Railways Board costs reasonably incurred by the Railways Board—

(a) in constructing any part of the specified works on behalf of the appropriate authority as provided by paragraph 4 above or in constructing any protective works under paragraph 5 above including, in respect of any permanent protective works, a capitalised sum representing the costs which may be expected to be reasonably incurred by the Railways Board in maintaining and renewing such works;

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

(c) in respect of any special traffic working upon any existing railways of the Railways Board resulting from any speed restrictions, or any substitution or diversion of services, which may, in the opinion of the Railways Board, be required by reason or in consequence of the construction of the specified works;

(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 of the specified works;

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