Scores of greenfield land in Basildon has been granted special status which will protect it from development and ensure public access for the future.

The area, known as Langdon Ridge, has been allocated as a Site of Special Scientific Interest,by Government body Natural England.

The huge site, roughly the size of about 450 football pitches, was given legal protection because of its grassland, woodlands, rare plants and invertebrates.

The site, which is home to rare species such as the Deptford pink and the grizzled skipper butterfly, will enjoy extra protection from development as a result.

The Langdon Ridge site includes the Dunton Plotlands Nature Reserve, Langdon Hills Country Park, Marks Hill Wood and Willow Park. The site was recommended as an SSSI last summer and Natural England signed off on the declaration last week, with board members describing the site as “nationally important”.

Dr Simon Lyster, Natural England board member, said: “Langdon Ridge is an amazing wildlife-rich landscape within 25 miles of central London that fully deserves SSSI status.

“It is particularly extraordinary because it is a large, 345 hectare mosaic of species rich grassland and woodland right on the edge of Basildon, providing a brilliant opportunity for local residents to enjoy nature right on their doorstep.

“Away from the town, it offers fantastic views of the Thames Estuary and links in well with other SSSIs in that part of Essex.

“Langdon Ridge is living proof that wildlife and people can both thrive if the will is there, and congratulations to all the local people and organisations who have made it possible.”

The designation was confirmed after considering responses to a four-month long consultation.

Natural England worked with Essex Wildlife Trust, Thurrock and Basildon Councils, and Basildon Natural History Society.