Emergency repairs to the iconic Lyme Regis Cobb are expected to commence next week to address significant structural damage below the waterline on the seaward side. Recognised as one of Dorset’s most famous man-made features, the Cobb has developed large holes caused by storm waves, raising serious concerns that the overlying stonework could collapse if not promptly repaired.
Dorset Council has applied for Listed Building consent to carry out vital works involving the injection of marine concrete into the voids within the structure, specifically at the area known as Ginshop Turn, an indentation that has suffered extensive erosion. These voids measure up to 2 metres deep, 7 metres wide, and 0.3 metres high, leaving crucial stone blocks unsupported and at high risk of imminent failure.
An expert report highlighted the urgency, stating: “Due to its vulnerable location and role in absorbing severe winter storm wave energy, immediate repairs are imperative.” A specialist archaeologist’s assessment reinforced the significance of the Cobb, describing it as “the earliest surviving example of its type in the country” and classifying it as a Grade 1 listed structure of Very High importance.
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The planned repair operation will involve erecting a temporary counterbalance scaffold system and deploying Haki steps to access the damaged zone safely. Heavy-duty boarding and matting will protect the Cobb’s surface during the process. To minimise disruption, fishing activities are expected to continue, though the Cobb Roadway will be closed to commercial vehicles exceeding 7.5 tonnes, except for those supporting the repairs.
Due to tidal constraints, work can only take place during spring low tides, limiting repair efforts to roughly four days in early November, subject to weather conditions. The marine concrete used will be pumped at high pressure and is designed to set within two hours, ensuring swift and durable reinforcement. Additionally, one-tonne concrete blocks will be strategically placed by crane in front of the repairs to reduce wave impact.
These emergency measures are separate from the larger, £8.4 million coastal defence project planned to secure the Cobb’s future stability. Discussions between Dorset Council and Historic England continue, with construction for this next phase anticipated to start this winter and extend through to spring 2027.
Dating back to the 13th century, the Lyme Regis Cobb has undergone numerous repairs and rebuilds throughout its history, reinforcing its status as a vital and cherished piece of Dorset’s maritime heritage.