The Network Code

Core Valley Lines (CVL) access

11 February 2026
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This page contains all Core Valley Lines (CVL) track access application consultations, decisions, consolidated agreements, and the CVL charging framework. It also contains information on the CVL Network Code, including details of any approved modifications to the Code, and our consultations on a network licence for the operator of the network.

Determined appeals under Network Rail's Network Code

10 October 2025
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Under Part M of Network Rail's Network Code, a party can appeal to ORR against any determination made by the relevant panel of the Access Disputes Committee which it considers to be wrong or unjust because of a serious procedural or other irregularity.

Modifications to Network Rail's Network Code

13 November 2024
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The rail industry can propose changes to Network Rail's Network Code through Part C. ORR has a role to approve those changes as any modifications to the Code may have a bearing on Track Access contracts.

High Speed 1 (HS1) access

22 September 2022
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Our role in approving track access to the High Speed 1 (HS1) network for train operators.

Heathrow Spur access

10 May 2022
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This page contains information on access and licensing on the Heathrow Spur.

Network Rail's Network Code

22 February 2022
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This page sets out the background of Network Rail’s Network Code, which is the set of rules behind the contractual relationship between Network Rail and the passenger and freight operating companies that run trains on their infrastructure.

Current appeals under Network Rail's Network Code

13 January 2014
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Under Part M of Network Rail's Network Code, a party can appeal to ORR against any determination made by the relevant panel of the Access Disputes Committee which it considers to be wrong or unjust because of a serious procedural or other irregularity.