New rules could be introduced at Tower Bridge after a bottle was dropped causing the top layer in the glass walkway to shatter.

The walkway opened to the public for the first time two weeks ago with the manager saying he was "gutted" about it smashing but emphasised the public was never at any risk.

The dizzying walkway allows you to see the river Thames more than 40 meters beneath your feet.

The glass was smashed last night after a bottle was dropped followed by a woman wearing stilettos standing on the crack.

But there are a further five layers of glass underneath.