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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System Management Principles Statement
System Management Principles Statement - Effective April 2015
System Management Principles Statement - Effective April 2016
System Management Principles Statement - Effective April 2017
System Management Principles Statement - Overview
System Management Principles Statement 010412 - 310313
System Management Principles Statement Compliance Report
System Management Principles Statement March 2008 v2_4