Portsdown Hill

Portsdown Hill is the boundary between the city of Portsmouth and Hampshire’s rolling countryside to the north. Much of the hill is designated as a Site of Special Scientific Interest (SSSI) due to its wildlife-rich chalk grassland. A variety of woodland and scrub habitats can also be explored via a network of paths.

Most of the SSSI is between 50 and 100 metres high, with the highest part of the hill reaching 120 metres. It is an excellent vantage point both north and south, with spectacular views across the Solent to the Isle of Wight.

The practical management of the site is carried out by the Portsdown Hill Countryside Service with additional tasks being carried out by contractors, volunteers and various community groups. The most appropriate management is extensive grazing and scrub control.

Grassland management and footpath maintenance keeps this wild and fascinating area accessible. A wide variety of plants and animals, particularly butterflies, thrive on the chalk grassland and include many species which are uncommon in wider countryside.

As well as being an important area for wildlife, Portsdown Hill has an interesting military history, and there is much to explore, including: six Victorian hill forts built to protect Portsmouth’s dockyard and naval base. The six forts stretch from Wallington to Farlington.

Up on the hill you will find plenty of car parking space and a variety of trails to follow.  These will provide pleasant walks with interesting information along the way about the history and wildlife in the area.

Feel free to discover the joys of Portsdown Hill – there is much more than spectacular views to enjoy.

Interpretation boards are available throughout Portsdown Hill that highlight self-guided walks, explain the history of the Forts, illustrate the variety of wildlife and describe some of the grassland management techniques employed to maintain this precious chalk downland.

Welcome to Portsdown Hill – information board

Portsdown Hill leaflet

Friends of Portsdown Hill

Nature in Portsmouth

Portsdown Tunnels

Contact details

Contact us on 023 9238 9623 (there is an answerphone) or at parks@portsmouthcc.gov.uk.

The Portsdown Hill Countryside Officer is based as Fort Widley, Portsdown Hill Road. Due to the outdoor nature of his work, please call first to check if he’s in the office.