Unlocking the potential of the Channel Tunnel could encourage more people to travel to Europe via train instead of by plane, thus cutting carbon emissions and promoting further integration.

A committee of peers has criticised the complicated booking process, yet this is evident for most train journeys, not just those travelling through the Channel Tunnel. A widespread simplification and standardisation of tickets would benefit passengers most.

However, reviewing the operating agreement for the Channel Tunnel could help to open up the opportunity for other services, thus offering passengers further choice to find the best deals.

This is clearly an area in which further investment could utilise the opportunity that the Channel Tunnel offers. But with so many projects nearer home needing funding and support, will this be something that takes priority?