Mill Hill Old Railway Nature Reserve

Mill Hill Old Railway Nature Reserve is a 2.3-hectare (5.7-acre) Site of Borough Importance for Nature Conservation, Grade II, in Mill Hill in the London Borough of Barnet.

The remaining stretch to Bunns Lane borders Lyndhurst Park.

The reserve is wooded, with some areas of rough pasture and herbs, and is an important habitat for slowworms.

[1] The mosaic of gardens backing onto the reserve provides a good habitat for suburban birds, including sparrowhawk, green and great spotted woodpeckers, long-tailed tit, chiffchaff and blackcap.

Butterflies, moths and other invertebrates such as orange-tip, small copper and hoverflies are common.