We want to deliver a development of the highest quality, meeting local housing needs and creating a strong sense of place.


The former Hertford Gasworks, located east of Marshgate Drive, was decommissioned around 10 years ago. This website contains information about our plans to redevelop this sustainable brownfield site, and how you can get involved in our consultation.



St William is a joint venture between National Grid and Berkeley Group. Our aim is to transform old industrial sites into places which people call home.


Find out more about the background to the sustainable brownfield site. 


 Keep up-to-date with the latest news about our plans