Manage our land to benefit the environment

Addressing our legacy:

Gas holders (gasometers) used to be a common sight on the skylines of the UK’s cities, towns and villages but are no longer needed for operation of a modern gas network.

We have committed to decontaminate and dismantle all of our remaining 23 gas holders between 2021 and 2026 and are ahead of schedule, having removed 22 by the end of 2024.

We also have a programme of cleaning-up contamination left beneath our land from bygone eras, such as at Howdon Lane, Newcastle.



Score in BITC Responsible Business Tracker for nature stewardship, against a cohort average of 29%


Tree Planting to Tackle Air Pollution

During 2023/24 we funded the planting of 22,430 trees across 25 sites in our region and since 2021 we have planted 45,497 trees, already exceeding our target of 40,000 by 2026. Our tree planting programme is estimated to deliver over £22m in lifetime societal and environmental benefits to our communities by 2050 including air quality improvements valued at £1.65m.

Case Study

Land Remediation at Howdon Lane

Read Case Study
Previous page

Partner responsibility and to hold suppliers to sustainability standards

Next page