Work on dampers to steady the wobbling Millennium Bridge will not start until next month, engineer Ove Arup & Partners confirmed this week.

It is believed that the dampers will be hidden from view below the 4 m wide pedestrian deck.

Ove Arup has spent more than a month trying to stop the bridge from vibrating as people walk across. It has been closed since June because of the problem.

Tests have included walking a crowd of 100 Ove Arup employees across the bridge to test how individuals change their gait when they feel the wobble.

Academics from the University of Southampton, Imperial College London and Sheffield University have taken part in the engineer’s research programme.

The findings of the programme will be submitted to the Millennium Bridge Trust and Southwark council at the end of the month.

The firm insists that the problem, which occurs when pedestrians involuntarily sway with the movement of the bridge, could not have been anticipated.

The bridge is not expected to reopen fully until Christmas.