The six bridges are...
|Albert Bridge||Chelsea Bridge||Westminster Bridge|
|Waterloo Bridge||The Millennium Bridge||Tower Bridge|
The river in each pin has a sparkle effect much like the London at Night set, but I'm not sure the Thames has ever been that blue!
The pins come in a boxed set and the mount card is a plan of the London Boroughs.
The pins are limited to 5,000 pieces each and my understanding is that they will not be available separately. The price for the set is £55 and will be available to all retailers from launch.