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 March 2010 v2_6
System Management Principles Statement March 2011 v2_7
System Management Principles Statement March 2012 v3_0
System Management Principles Statement V 3_3 - mark up
System Management Principles Statement v3_2
System Management Prinicples Statement Report 2010 - 2011
System Managment Principles System
System Supply Comparison
System User Agreement