I could not possibly comment on the words of my honourable friend in the other place, and I will go no further on that, but if I can shed any light, I will happily write to the noble Lord.
The words missing from the Explanatory Memorandum are “future needs”. Needs that might come to light will be in freight, for example. In my view, rail freight is an area where we should be looking to expand and improve the volume of goods that travel by rail. Improving gauge clearances or making all the other slight changes that one has to make to a railway to improve the ability of rail freight to, for example, get through tunnels, may have a knock-on impact on the safety certification.
I do not know for sure, but these are the sorts of things that we will need to look at if we are to get more freight on to our railways. Therefore, we feel that, in future, divergence is a possibility. It is by no means a certainty. It would not happen without full consultation with the industry, and it would happen only if it is in the interests of the industry.