Challenging coastal works secure vulnerable section of Lyme Regis’s iconic Cobb 

Repair works to a vulnerable section of The Cobb in Lyme Regis have been successfully completed, helping to protect this much‑loved landmark and the harbour it shelters. 

The Cobb plays a vital role in supporting local businesses, fishing activity and tourism, as well as helping reduce the risk of coastal flooding. 

With a window of opportunity of a low spring tide at the start of this week, works to repair a void on the base of the Cobb wall were successfully completed over two days. 

This follows previous failed attempts to permanently repair the void – first identified during inspections in 2025 – which were thwarted by bad weather and a large build-up of shingle. 

Cllr Nick Ireland, Leader of Dorset Council, said: “I am absolutely delighted that we have been able to repair this void, which can only be done at very low tide and with calm weather. 

“People in Lyme Regis know just how important the Cobb is – it protects the harbour, supports local jobs and is a big part of the town’s identity. 

“It has been a complex and carefully timed operation with our engineers having to work around tides, weather and in a very exposed spot. I want to thank everyone involved for getting it done safely. 

“We also really appreciate the patience of residents, businesses and visitors while this work has been taking place. These are essential repairs that help us look after The Cobb for the future.” 

When the void was first identified, temporary measures were put in place to ensure the Cobb was protected before permanent repairs could get underway. 

Work got underway on Monday (15 June) when engineers prepared the site and installed a specialist concrete mattress bag, filling it with concrete to structurally secure the base of the wall.  

The team returned on Tuesday (16 June) to remove equipment and complete final sealing works. 

This newly installed mattress has now stabilised the area and is providing essential structural support to this previously vulnerable section of the Cobb. 

The area will continue to be monitored as part of ongoing maintenance, and the repair is expected to gradually blend in with its surroundings over the coming weeks. 

Repairs to the void secure the structure against further damage in the area pending a longer-term strategy to stabilise the Cobb for generations to come. 

Investment has been secured for this project and Dorset Council, Historic England, Natural England and the Environment Agency have formed a joint working group to finalise plans. 

Updates on The Cobb stabilisation project will be shared through the Dorset Coast Forum website.