My hon. Friend has raised some important points, and I shall touch on some of them in a moment. There are currently no regulations that would mandate the introduction of shore-to-ship power, although it is possible that European Union directives could be used for the purpose.
To the credit of Southampton port, it is looking into whether it can install facilities in one cruise liner berth, but, as far as I know, it is alone in that. No other major port in the United Kingdom is following suit. The arguments that are presented for doing nothing about it are multiple and familiar. It is argued that not enough ships have the facilities to “plug in”, so it would be a waste of money, or that it is too expensive to take the plunge unilaterally, or that there are other ways in which emissions from ships might be reduced.