Lyme Regis Cobb Stabilisation Scheme

The Cobb is a historic iconic harbour that provides a pivotal role as both a protective breakwater and a safeguard against erosion and flooding along the Lyme Bay coastline. In recent years, structural investigations have shown that the harbour is suffering from destabilisation caused by wave impact and sea floor erosion. The goal of this scheme is to reinforce and repair the harbour walls, ensuring that it continues its vital function for the bay and the local community and that its important heritage is safeguarded.

Stabilising the Cobb - What’s involved?

Stabilising the Cobb is not just an engineering challenge—it’s a complex puzzle with layers of constraints that make it one of the most demanding coastal projects in recent memory.

The structure’s historic significance means interventions must respect heritage values, while environmental sensitivities demand solutions that minimise ecological impact. Add to this the harsh physical realities of tidal working, unknown foundation depths, and exposure to dominant wave directions.

Cost limitations further tighten the options, forcing a delicate balance between durability, constructability and affordability.

Those involved in the scheme, including advisors and stakeholders, are all committed to develop a solution that protects the Cobb for future generations.

In November 2025 Dorset Coast Forum hosted an engagement event at the Jubilee Pavilion to provide updates on the status of the stabilisation scheme and to hear comments and feedback from the community about the project direction. The engagement summary report can be found here: Engagement Summary. Further engagement is planned for 2026.