Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment she has made of the potential impact of running the Class 171 diesel fleet of trains on the line between Uckfield and Hurst Green on the environment.

The Secretary of State has not made a specific assessment of the environmental impact of operating diesel trains on the Uckfield branch line.  As the line is not electrified, it is a matter for the operator to ensure that they meet the needs of customers by deploying the appropriate rolling stock to deliver train services while reducing environmental impacts wherever possible.