Cracks are visible on some of the chimneys and need to be rebuilt for safety reasons and to ensure they last, say the developers.
But campaigners say taking the chimneys down will ruin the character of the building.
A small group of people dressed as monkeys gathered outside the station today with placards claiming the company behind the development 'don't give two monkeys' for the iconic building.
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Transport for London expects 34,000 vehicles a month will be liable for the Toxicity Charge on top of the £11.50 Congestion Charge.
Drivers of the most polluting vehicles will pay the new £10 T-Charge, meaning a daily payment of £21.50 to enter central London.
Police are hunting for the owners of this jewellery which they believe is stolen