Transport Minister Theresa Villiers has rejected a Labour claim that the government is planning to close more ticket offices at railway stations.
Mrs Villiers was responding to comments by shadow transport secretary Maria Eagle, who said that not all passengers have internet access and needed the help of ticket office staff to obtain the best fares.
The transport minister pressed Ms Eagle for an example, claiming that ticket office closures were "not happening".
Ms Eagle claimed that she had a leaked email which showed that the government had approved ticket office closures and planned to blame them on train operating companies.
"Will the minister admit she has already given the green light to these closures?" she asked.
Mrs Villiers retorted that the proposals applied to the London Midland route and were not finalised.
Ministers also faced questions from MPs on topics including bus fares in England, the High Speed 2 rail project and the cost of fuel.
Following transport questions, Minister for Women and Equalities Theresa May and her ministerial team faced MPs at the despatch box.