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Portsmouth City Council


Portsea, Hampshire



The Tipner Lake phase of works covers 1.85 km of coastline from the Mountbatten Centre to the Portsbridge roundabout and will take three years to complete. The area has environmental designations that include SPA, RAMSAR, Important Bird Area, SSSI, Designated Shellfish Waters and Bass Nursery Area.

A new, 4m high, reinforced concrete seawall comprising large areas of encasement and sheet pile installation is being built along the entire frontage of Tipner Lake, which will provide a continuous defence and protection against a 1 in 500-year coastal flood event.

A shared footpath and cycleway directly behind the seawall will be reconstructed as part of the works, together with new landscaping, planting and creation of ‘social spots’ that will provide places for people to stop, relax and enjoy the views. A shared use coastal path will be retained and a new network of paths will improve access.

Also included as part of the works is the removal of the 250m Lower Wade Way slipway and causeway and the construction of a new, shorter slipway.

An ornithological watching brief is in place from November 2017 to February 2018, while we undertake some non-piling and site preparation works over the 2017/18 winter period. This was agreed with Natural England to ensure that there is no significant disturbance to the waders and Brent Geese that feed on the intertidal area adjacent to the seawall.

our sectors

Knights Brown performed very well on this project in terms of quality, cost and time. The team worked very well as part of an integrated delivery team with the Employer to the benefit of the project

- Marc Bryan, Portsmouth City Council

Sites are always very well presented. First impressions count and if a site looks well organised and clean when you arrive then generally this is applied throughout the management of the projects. Indeed, all five projects I am Cummins PM for, have been managed to a high standard and equally the safety records and standards are very good.

- Iain Brooks, Cummins