Independent Gas Transporters (IGTs) develop, operate and maintain local gas transportation networks.
IGT networks are directly connected to the Gas Distribution Network (GDN) via a Connected System Entry Point or indirectly to the GDN via another IGT. Although domestic, industrial and commercial premises are connected to IGT networks, new housing and commercial developments form the largest share of the IGT market. It is estimated that the number of consumers connected to IGT networks is around one million.
| iGT | Registered Number | Registered Address |
| Energetics Gas Limited | SC303150 | Fenwick House Lister Way Hamilton International Technology Park Glasgow, South Lanarkshire G72 0FT |
| Energy Assets Pipelines Limited | 3822878 | Ship Canal House 98, King Street, Manchester M2 4WU |
| ES Pipelines Limited | 3234745 | Bluebird House Mole Business Park Leatherhead Surrey KT22 7BA |
| ESP Connections Limited | 2865198 | Bluebird House Mole Business Park Leatherhead Surrey KT22 7BA |
| ESP Pipelines Limited | 3405272 | Bluebird House Mole Business Park Leatherhead Surrey KT22 7BA |
| Fulcrum Pipelines Limited | 06006362 | 2 Europa View Sheffield Business Park Sheffield S9 1XH |
| GTC Pipelines Limited | 3104203 | Energy House Woolpit Business Park Bury St Edmunds Suffolk IP30 9UP |
| Independent Pipelines Limited | 2828692 | Energy House Woolpit Business Park Bury St Edmunds Suffolk IP30 9UP |
| Quadrant Pipelines Limited | 2528816 | Energy House Woolpit Business Park Bury St Edmunds Suffolk IP30 9UP |
| Indigo Pipelines Limited | 2742721 | One London Wall London EC2Y 5AB |
| Harlaxton Gas Networks | 9805332 | Toll Bar Road Marston Grantham Lincs NG32 2HT |
| Murphy Gas Networks | 10622244 | Hiview House Highgate Road London NW5 1TN |