In the article, which is nearly a year old, it says:
"Lib Dem transport spokesman Tom Brake said it was time ministers started looking at ways to increase room on trains such as building "double decker" trains"
I see from his profile on the LibDems website that Mr.Brake was brought up and educated in France. I wonder if he got the idea for double-decker trains from France and if he is aware of the differences in loading gauge?
I rarely give politicians much credit
John.