The Department has itself made no such assumptions: planning to meet growth in traffic is a matter for the Mersey Docks and Harbour Company. In relation to containers specifically, the Company’s evidence to the inquiry last year into the application for a Harbour Revision Order to permit development of the Seaforth River Terminal included a projection to 2015 of the trend growth-rate of 5.1 per cent. per annum which had been experienced over the 10 years to 2005.