English Heritage is a prominent organization dedicated to the preservation and management of historic sites across England. With a mission to bring history to life, it manages over 400 historic buildings, monuments, and sites, from world-famous prehistoric sites to grand medieval castles, Roman forts on the edges of an empire, and a Cold War bunker. The organization plays a crucial role in educating the public about England's rich cultural heritage and history.

In terms of sustainability, English Heritage is committed to reducing its environmental impact and promoting sustainable practices. The organization has implemented various initiatives to minimize energy consumption and carbon emissions across its sites. It actively engages in conservation projects that not only preserve historical integrity but also consider ecological impacts. English Heritage is working towards achieving sustainability certifications and is transparent about its efforts through regular sustainability reports. However, detailed ESG reports or specific carbon footprint calculations are not extensively available.