Contact us

If you have a question for us, want to find out where we are located or have a complaint, you're in the right place.

Asset Protection

Contact us for the following:

  • You are working near our assets
  • You need advice on submitting an enquiry
  • You wish to check the status of an ongoing enquiry
  • You are changing your Gas Grantor details

For domestic enquiries, such as metering or power cuts, more information can be found on the National Grid ESO website


Contact us for the following:

  • Margin notices and gas deficit warnings (GDW)
  • Issues balancing the NTS
  • Operating Margins (OM) and OM services
  • Unaccounted for Gas (UAG)
  • REMIT (Regulation on Wholesale Energy Markets Integrity and Transparency) and publishing notifications
  • Safety monitors
  • NTS Linepack
  • NGage meter validation app
  • Gas DSR (Demand Side Response) and offering a DSR service
  • On-the-day Commodity Market (OCM) and contingency plans
Charging and methodologies

Contact us for the following:

  • NTS connection charges
  • How charges are determined
  • Daily gas capacity methodology
Gas Query Directory

To help you efficiently find the right person to talk to in relation to specific National Transmission System operational gas queries, we have developed the following contact list and directory. We have based it on the most common queries we receive from our customers. Its purpose is to make finding the right subject matter expert within National Gas, quicker and easier than ever before.

Please note that if your query relates to a home or domestic gas connection or meter exchange, please contact your network operator. You can find who your network operator is on the Energy Networks Association website.  

Download the Gas Query Directory

Industrial connections

Contact us for the following:

  • Connecting to the NTS 
  • Modifying a connection
  • Disconnecting or decommissioning
  • Reserving capacity (PARCA and CAM)
  • Gas shipping (administered by Xoserve)
  • Interconnectors
  • Diversions to the NTS

Please note that we do not connect domestic properties or move meters.  If you have non-industrial queries, please contact your distribution network operator (DNO).

Smell gas? Call 0800 111 999

IT systems

If you experience issues with access to our IT systems please get in touch.

Make an Environmental Information Regulations (EIR) request
Market and operations

Contact us for the following:

  • Gas operational data and news
  • Gas capacity (entry and exit)
  • Maintenance to the NTS and outages
  • Constraint actions
  • Operational forum
  • Gas quality
  • Calorific value
  • Gemini contingency arrangements
Market change and codes

Contact us for the following:

  • Gas codes and market development (EU and GB)
  • Commercial strategy
  • Balancing arrangements for the NTS and associated technical issues
  • Transportation charges
  • EU strategy and policy
  • Commercial changes for capacity and charging
Metering, domestic and homeowners

We don’t connect directly to homes or other domestic properties. If you are a domestic customer (for example, you own a home or another non-industrial property), you will need to contact your local distribution network (DNO) to find out whether your property is connected, or how to move your meter. 

Find out who who your DNO is

National Gas Services

You can find a list of National Gas Services office addresses and phone numbers across Britain on the National Gas Services page.

Our locations

Warwick - Headquarters

National Gas Transmission's registered office is in Warwick. 


National Gas Transmission

National Grid House
Warwick Technology Park
Gallows Hill
Warwick, CV34 6DA

Tel: +44 (0) 1926 65 3000