Paragraph 21 I1

The sums payable by the Harbour Authority under paragraph 18 shall include a sum equivalent to the relevant costs.

Subject to the terms of any agreement between Network Rail and the relevant train operators regarding the timing or method of payment of the relevant costs in respect of that train operator, once received, Network Rail shall promptly pay to each train operator the amount of any sum referred to in sub-paragraph (1) that relates to the relevant costs of that train operator.

The obligation under paragraph 18 and sub-paragraph (1) to pay to Network Rail the relevant costs shall, in the event of default, be enforceable directly by a train operator concerned to the extent that such a sum would be payable to that operator pursuant to sub-paragraph (2).