Tyttenhanger Gravel Pits are situated between Colney Heath and London Colney near St Albans in Hertfordshire. It is valuable green space for wildlife. walkers and anglers, currently used for gravel extraction. It is under threat from development. Under Hertsmere Borough Council's Local Plan, 6,000 dwellings are scheduled to be built, some up to the perimeter of the main gravel pit. This is being referred to as site H2. The area is home to an extremely rare colony of tree sparrows which is unlikely to survive the development. The gravel pits are home to nesting oystercatchers, greenshanks, numerous other wading birds and some rarities. It is probably the most important wildlife site in Hertfordshire. Enjoyed by  so many since its creation and even more people since 2020 lockdown, it would be devastating to lose what remains of our local wildlife to development. The site is of local, if not national importance. 

The Tyttenhanger Working Group was established to highlight the danger and concerted efforts were made to motivate people and groups to object to the proposals. These objections have been ignored. Measures to mitigate the threat seem unlikely to save the tree sparrows. 

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