More than a ton of fireworks goes up in a spectacular display.
In 2011 the Thames Festival is again working with internationally acclaimed pyrotechnic experts Pains Fireworks, winners of the Montreal International Fireworks Competition 2007, which is considered within the industry to be the Olympics of the fireworks world.
The two barges are positioned mid-river between Blackfriars and Waterloo Bridges, so there's plenty of opportunity to find a space after watching the the magical illuminated Night Carnival procession on Victoria Embankment on the north bank of the river.
You can also get a good view from Blackfriars and Waterloo Bridges themselves.