Welcome to the Infrastructure Manager pages for Seilwaith Amey Cymru / Amey Infrastructure Wales Limited (AIW).
This site hosts key regulatory documentation and other information in respect of the role AIW undertakes as Infrastructure Manager for the railway network running from Cardiff to Treherbert, Aberdare, Merthyr Tydfil, Coryton, Rhymney and Cwmbargoed (known as the Core Valleys Lines), as well as hosting consultations run by AIW.
The Core Valley Lines network was transferred from Network Rail to Transport for Wales on 28 March 2020. Transport for Wales leases its assets to AIW who are the Infrastructure Manager for the Core Valley Lines network.
- The ORR’s applications, decisions and consolidated agreements for the CVL are available here
- The CVL is covered by and operates in accordance the Rule Book (GE/RT8000) and other National Operations Publications, which are available here
- The CVL is described in the National Electronic Sectional Appendix which is available here
- For CVL access charges, AIW is using Network Rail’s Track Usage Pricelist until 31st March 2024 and is available here
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The CVL is covered by the National Hazard Directory (NHD), here
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The CVL is covered by Network Rail's Asbestos Risk Management System (ARMS), here
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Rail Notices, here
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Line blockages of the CVL network are obtained via the Green Zone Access Management (GZAM) system, here
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Although we are an off-network member of the Delay Attribution Board, train delays on the CVL network under the performance regime are in accordance with the Delay Attribution Principles and Rules
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The CVL Engineering Access Statement is contained within the Network Rail Engineering Access Statement and is available here
For information on current consultations being run by AIW please visit our Consultation Centre.
If you have any queries and/or would like to discuss access with us, please feel free to contact us at this email address: CVLTrackAccess@amey.co.uk
Infrastructure Manager Documentation
- CVL Network Statement 2025 - issue 1.1 | English
- CVL Network Statement 2025 - issue 1.1 | Welsh
- CVL Network Statement 2025 - issue 1.1 | French
- CVL Network Statement 2026 | English
- CVL Network Code V9 5th August 2024
- CVL Framework Capacity Statement
- CVL Traction Electricity Rules - Version 1 November 2023
- CVL Track Access Agreement - Freight template
- CVL Track Access Agreement - Passenger template
- CVL Track Access Agreement - Charter Template
- CVL Track Access Agreement - network engineering services and on track machines Template
- Stakeholder Relations Code of Practice general
- Stakeholder Relations Code of Practice for new and potential operators
- Management of congested infrastructure code of practice
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CVL Network Change Template Letters
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C Standard Form C CVL G2 Network Change acceptance response from operators
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D Standard Form D CVL G2 Network Change rejection response from operators
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E Standard Form E CVL Non Access Party response to G1 Network Change
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I Standard Form I CVL G4 Network Change acceptance response from operators
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J Standard Form J CVL G4 Network Change rejection response from operators
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K Standard Form K CVL Non Access Party response to G3 Network Change
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O Standard Form O CVL operator or consultee acceptance to G5 Notice of Intended Scope
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P Standard Form P CVL operator or consultee rejection of G5 Notice of Intended Scope
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Q Standard Form Q CVL G9 Competent Authority Network Change notice
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R Standard Form R CVL Response to G9 Competent Authority Network Change
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S Standard Form S CVL AIW entitlement to implement a Network Change
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T Standard Form T CVL operator rejection of AIW entitlement to implement a NC
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U Standard Form U CVL Sponsor entitlement to make AIW implement a G3 NC
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V Standard Form V CVL operator rejection of Sponsor entitlement G3 NC
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W Standard Form W CVL AIW rejection of Sponsor entitlement G3 NC
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X Standard Form X CVL Establishment of Network Change advice
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CVL Vehicle Change Template Letters
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Standard Form A - Sponsor Initiation of Vehicle Change procedure
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Standard Form B - Sponsor vehicle change proposal - Notification to consultees
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Standard Form C - CVL IM Vehicle Change notice to consultees
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Standard Form D - CVL IM preliminary response proposed vehicle change
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Standard Form E - TOC acceptance response to proposed Vehicle Change
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Standard Form F - TOC Rejection response to proposed Vehicle Change
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Standard Form G - Non Access Party response to Vehicle Change
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Standard Form I - CVL IM F3 rejection response to sponsoring TOC
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Standard Form K - CVL IM F4 Competent Authority Vehicle Change notice
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Standard Form L - TOC F4 Response to Competent Authority Vehicle Change
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Standard Form M - CVL IM Establishment of Vehicle Change advice Standard Form
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Established Network Changes
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CVL AIW Establishment of Network Change Rhymney LMD 17-05-2021
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CVL Network Change Establishment Notice - CVLNCCP01-G1-02: TAM Commissioning
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CVLNCCP01-G1-05 Commissioning and Overhead Line Electrification System from Pontypridd to Treherbert
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Establishment of CVL Network Change Notice CVLNC012 Cardiff Queen Street 9454 points
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