I've been travelling around the country with Mystic Peg, our fortune teller, and I've heard again and again that people need a walk-on railway.

In Leeds, Manchester, Birmingham, Norwich and elsewhere, people have been telling us that the Government must make it affordable to turn up at the station and go, without booking in advance.

Even the Department for Transport's Citizen's Panel report said that fares are too expensive, and that it needs to be cheaper to take public transport than to make the same journey by car.

Yet our research shows that it is almost five times more expensive to travel if you buy your ticket on the day, rather than booking several weeks ahead.

If we don't do something, the problem of expensive walk-on fares could get worse. The Government plans to halve its investment in the rail network from £6.3 billion in 2006/7 to only £3 billion in 2014. Passengers will pay higher fares to make up for the cut in funding.

I've written a letter to Transport Secretary Ruth Kelly (http://www.bettertransport.org.uk/system/files/Ruth_Kelly_rail_fares_letter.pdf) to tell her that the Government won't be able to tackle climate change if people are priced off the railway. If you ask your MP to write to her too, we'll show that passengers won't be ignored.