Question to the Department for Transport:

To ask the Secretary of State for Transport, pursuant to the Answer of 3 September 2025 to Question 69881 on Transport: Cost Benefit Analysis, whether her Department will make business case documents available for each scheme ahead of the Full Business Case stage.

For the 50 schemes referenced in the Secretary of State’s statement on 8 July 2025, detailed Green Book analyses, costs, and benefit cost ratios for each scheme have not been published as a single package

The scheme-level business cases and economic assessments for projects in the Government Major Projects Portfolio are published as they are finalised and reach the appropriate stage in the investment process. Summary information on costs and benefit cost ratios for major transport schemes may also be found in the Department for Transport’s Major Projects Portfolio, available at: https://www.gov.uk/government/collections/major-projects-data

In the case of Major Road Network schemes, the business cases belong to the relevant local authorities. This information is therefore available directly from them, once a scheme is approved at the Full Business Case (FBC) stage. Whilst we encourage them to publish these, it is their decision whether to publish their business cases on their respective websites.

Detailed information on Strategic Road Network (SRN) schemes is available in the applications for planning consent, available on the Planning Inspectorate’s website. Decisions to select schemes were based on evidence assessed against a wide range of criteria, in line with the HM Treasury Green book and the Department’s Transport Analysis Guidance.

More information about rail enhancement schemes over the SR period is featured in the UK infrastructure pipeline published on 11 July, which government has committed to update regularly.

There are no plans to publish officials’ advice to Ministers regarding the schemes in question. As each scheme progresses, further documentation is released and made available on gov.uk as appropriate. The Government is committed to transparency and will continue to make business case documents available in line with Green Book and Treasury guidance as schemes move forward.