When the sun starts to go down, many cats come trooping across the bridge cats of all different kinds and colors.

NEWYORKER: Town of Cats

During the flashride, the cyclists moved across the bridge en masse in a "go-slow" which temporarily held up traffic.

BBC: TfL plans for Blackfriars Bridge spark cyclists protest

When the announcement came a friend and I decided to go to London and we duly arrived at Waterloo and walked across the bridge to Trafalgar square after a few hours with the revellers we returned to Wimbledon but decided to return to London later.

BBC: Witness