Langstone Coastal Defence Study

Havant Borough Council (HBC) are undertaking a feasibility study to appraise options and develop outline designs for sea defences at Langstone to reduce coastal flood and erosion risk to over 100 properties over the next 100 years, as well as critical infrastructure including the A3023, the only road access to Hayling Island. In March 2018, the Eastern Solent Coastal Partnership (ESCP) on behalf of HBC, secured £376,000 of funding made up from Regional Flood and Coastal Committee Levy and HBC Community Infrastructure Levy to progress the outline design stage of the Langstone scheme.

Where are we now?

We are currently at the preferred option stage of the project. The leading options have been shared with local residents, businesses and landowners during a period of engagement between May and June 2019. This period concluded with a Key Stakeholder Working Group Meeting at the end of June. *

To view the Key Stakeholder Working Group presentation of preferred leading options for the Langstone Coastal Defence Study, please click here*

Over the past few months the project team have also been working with key landowners to try and identify additional funding contributions towards the scheme.

Where is the Langstone Frontage?

The Study aims to develop preferred coastal defence options for the Langstone frontage, near Havant, as recommended in the Portchester to Emsworth Flood and Coastal Erosion Risk Management (FCERM) Strategy (the Strategy - Environment Agency 2011).

The ~1km long Langstone frontage is located on the mainland immediately north of Hayling Island (see figure 1 below). Both Langstone and Chichester Harbours are sensitive sites, designated environmentally at a Local, National and International level.

The frontage is popular with locals and tourists due to its unique setting and is an important cultural heritage area, with 8 listed buildings in the Langstone Conservation Area and a historic Wadeway from Langstone to Hayling Island.

Figure 1 | Langstone Coastal Defence Study extent

*To view the flood maps for the Langstone Coastal Defence Study, please click here*

Why is there a need for a scheme?

The coastal defence scheme will aim to reduce flood and coastal erosion risk over the next 100 years for over 100 properties, heritage assets and critical infrastructure including the A3023; the only road crossing to Hayling Island.

The existing defences consisting of a mixture of concrete walls, concrete block revetments and masonry quay walls which are in a poor condition. Currently maintained by HBC and other private owners, the majority of present defences have residual lives of less than 5 years (without any maintenance) and therefore, without a Langstone Scheme the existing community will continue to be at significant flood risk.

What have we done so far?

> Ground and Structural Investigations
> Preliminary environmental and heritage studies 
> Initial community engagement
> Defined a longlist of options
> Reduced the longlist to a shortlist of options
> Shared the shortlist of options with the public
> Shortlist option appraisal (environmental, technical, economic, social)
> Identified leading options

Community engagement

The project team will continue to engage closely with the local community and businesses during the outline design stage of the project, with wider public engagement programmed for the Autumn.

What is happening next?

Over the coming months the outline designs and environmental reporting will be developed. The detailed design stages of the project are likely to begin in Autumn/Winter 2019.

Southmoor Scheme

The planning application for the Southmoor Managed Realignment Scheme was withdrawn recently by the Environment Agency (EA), due to a number of major constraints within the site relating to important utility infrastructure assets. The escalating requirements needed to protect these assets meant a decrease in the available land for potential habitat creation and a significant increase in scheme construction costs. Even with contributions secured towards the costs of the scheme, the scheme is not financially viable and therefore will not be progressed any further by the EA. The ESCP will review the Southmoor scheme from a flood risk management perspective during the appraisal stage of the Langstone scheme.

Click here to view our position statement on the Southmoor Scheme.

If you would like further information on the Langstone Coastal Defence Study, please email