The area around the London Eye was evacuated on Friday afternoon when a dredger picked up a suspected Second World War bomb from the Thames.
Police were called after the discovery near to Hungerford Bridge, which is currently being refurbished. A spokesman for the Metropolitan Police said that the shell was not live and there was no explosion.
A British Airways spokesperson said that the London Eye and nearby areas were cleared of more than 800 people by police during the alert. The wheel remained shut for around 20 minutes before being re-opened to passengers.