National Gas Transmission owns and operates the gas National Transmission System (NTS) — a 5,000-mile pipeline network that transports gas from terminals and ports to every part of Britain.
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Invitation to Tender Guidance Document 2026-27
Invitation to Tender (ITT) Letter 2026-27
Independent Stakeholder Group Report September 2025
I Have A Gas Query
ISO 14001 Certificate
ITO Guidance Document 2025.2026
Independent Stakeholder Group Report June 2025
Indicative Notice of General Non-Transmission Services Charges from October 2025
Innovation Strategy document for 2025
Independent Stakeholder Group Report March 2025