Sir Terry Wogan raises Tower Bridge

Sir Terry was invited by the City of London Corporation, which owns Tower Bridge, to raise the two 1,100-tonne bascules to allow the SB Will to pass underneath the bridge and along the river.

Sir Terry made a series of announcements over the bridge's Tannoy system to warn drivers, pedestrians and technical staff about its imminent closure and reopening.

Afterwards he posed outside the control cabin with a commemorative certificate and joked with fans before heading to Mansion House to receive the Freedom of the City of London.