Cornwall Councillors have refused an application by developers to keep controversial sea defences at Carlyon Bay near St Austell.
CEG - the company behind a £250 million scheme - wanted to retain the temporary 80 metre long sheet piling for another 3 years.
But councillors voted 11 to 2 in favour of refusing the application, despite the planning officer's recommendation to approve it.
Local campaign group Carlyon Bay Watch says it is 'delighted' with the decision and is calling on Cornwall Council to enforce the planning law to make CEG remove the structures which it says are 'blighting what should be St Austell's best asset'.
Stephen Gilbert MP said he "feared at worst" that the woman he helped rescue from the Thames was dead.
He said: "I feared at the worst it would be a body, I alerted the police, and they were called in to get a response, and then she moved, and I was able to chase down the terrace and grab one of the life-buoys, throw it in, made a reasonably good shot and she grabbed it."
He added, "I guess it's just the right time, right place and I was delighted to help.
The Metropolitan Police had said they pulled a woman from the water after MP Stephen Gilbert claimed he rescued her:
"At 1950 the marine policing unit responded to reports of a woman in the River Thames near Westminster Bridge. They recovered her from the water and took her to hospital. Next of kin have been informed," the force said in a statement.