Last updated at 16:44
image

Pictures: Olympic rings towed down the Thames

Giant Olympic rings have been launched on the River Thames to mark 150 days until the start of the London Games.
Giant Olympic rings have been launched on to the River Thames to mark 150 days until the start of the London Games.
Olympic rings float past the Shard skyscraper with Waterloo Bridge in the background.
The rings are 11 metres high and 25 metres wide. They are coloured on one side and have white LED lights on the other.
The rings in front of the famous Tower Bridge, with HMS Belfast to the right.
They are travelling on a barge passing key landmarks including the Tower of London.
The Olympic rings in front of the Tower of London.
The Olympic rings cost more than £930,000.
Olympic rings in front of Tower Bridge.
They were a surprising sight on the river.
Olympic rings in front of Tower Bridge.
Tower Bridge had to be raised to allow the giant rings through.
Tower Bridge raised to allow the Olympic rings through.
The Rings on the River will now go into storage until the start of the Olympics, when they will again appear on the Thames.
Olympic rings in front of Tower Bridge and HMS Belfast.