What is Labour’s plan for rail travel and will it make tickets cheaper?

The actual railway infrastructure is already managed by the state-owned Network Rail, since the disastrous tenure of Railtrack in the early days of privatisation, and train operations in Scotland, Wales and a large chunk of England are in public ownership.

However, it believes that its plans will eventually save £2.2bn a year by avoiding the duplication and bureaucracy brought on by the current system, where the Department for Transport tightly controls and specifies contracts for the private firms, and reams of staff are employed in back-end roles.

It’s testament to the complexity, or occasional absurdity, of UK rail fares that even after years of industry focus on improving the system, renationalising looks an easier promise than telling a passenger they’ve paid the right amount.

The shadow transport secretary, Louise Haigh, pointedly chose the headquarters of Trainline in central London to launch her plans on Thursday, paying tribute to the travel app firm’s “relentless focus on passengers [and] improving their experience”.

But given that the app’s business depends on people paying extra to cut through the railway’s confusing fares, fragmentation and lack of a decent central ticketing site, Trainline shareholder nerves might be taken as a vote of confidence that GBR will improve the industry’s own offering.

But the people actually running train operators, right up to the managing directors, have typically stayed in post with a different coloured badge when the owning groups moved on, and passengers at say, Southeastern or LNER may not feel life is very different.