Now that it has been proven that diesel is one of the highest pollution offenders, will Abellio now take off the ancient decrepid bucket of rust that supposedly passes for a train, which runs between Norwich and Great Yarmouth every hour.

It kicks out a considerable amount of fumes and is noisy, I dread to think what it is doing to both our lungs and ear drums.

We were originally told we would only have to suffer it for a few months then a nice new shiny one would replace it, well, we still seem to be stuck with it after more than just a few months.

It is time Abellio listened to what is being said and stuck to their 'promises'.

Nadine Parfitt, Cullings Hill, Postwick.