Question follow-through · 121180

Network Rail: Assets

To ask the Secretary of State for Transport, pursuant to the Answer of 14 January 2026 to Question 102105 on Network Rail: Assets, what assessment she has made of the effectiveness of Network Rail’s calculation of the Composite Sustainability index for ea

answeredDepartment for Transport

About this written question

A written question asks a government minister for information in writing. Parliament publishes the question and any answer.

Answering body
Department for Transport
Tabled
16 Mar 2026
Target answer date
18 Mar 2026
Answer
30 Mar 2026 · 14 calendar days after tabling

Elapsed calendar days describe the record timeline, not whether Parliament considers an answer on time.

More questions by this MP on Transport

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Recorded timeline

  1. 16 Mar 2026

    Question tabled

    To ask the Secretary of State for Transport, pursuant to the Answer of 14 January 2026 to Question 102105 on Network Rail: Assets, what assessment she has made of the effectiveness of Network Rail’s calculation of the Composite Sustainability index for ea

  2. 18 Mar 2026

    Target answer date

    Date supplied by the official written-questions record.

  3. 30 Mar 2026

    Answer published

    The methodology for the composite sustainability index (CSI) calculations is developed by Network Rail and is recognised by the regulator, the Office of Rail and Road, as being a reliable and effective means to monitor the changing remaining life of railw...

Open official record

Official data retrieved 28 Sept 2026.

Later records

Possible follow-up questions

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Electric Vehicles: Charging Points

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Electric Vehicles: Charging Points

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Bus Services

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Bus Services: Crimes against the Person

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20 May 2026 · To ask the Secretary of State for Transport, what assessment her Department has made of the potential role of Digital Twin technology in supporting the delivery of an integrated transport system in the UK.

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Universal Destinations and Experiences: Transport

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Unreviewed candidateSame MP and department; topic relationship is unreviewed

Active Travel: Public Transport

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