We take our first look inside the cradles, which sit under the East Walkway of Tower Bridge.
The temporary access staircase, which is now covered with debris netting
Cradle number two and a bundle of straw. Port of London Authority by-laws require a bundle of straw to be suspended from the bridge to alert mariners to the reduced headroom.
The two cradles under the East Walkway fitted with blue debris netting
Inside one of the cradles under the East Walkway of Tower Bridge
One of the many clamps which supports the cradles under the Walkway
Abseiler Karl, checking the storm tensioner inside one of the cradles