Video at link:
http://www.telegraph.co.uk/news/newstopics/howaboutthat/10938258/Giant-dragon-flies-through-Londons-Tower-Bridge.html
Giant dragon flies through London's Tower Bridge
London's Tower Bridge raises its drawbridge to allow a giant dragon to soar through as part of a promotional stunt for the release of How to train your dragon 2
3:19PM BST 01 Jul 2014
A giant dragon flew through the skies of London on Tuesday morning.
The city's iconic Tower Bridge raised its drawbridge to allow a kite, made to look like a dragon, to soar through as it was dragged behind a speed boat on the river Thames.
The kite larger than a double-decker London bus flew through the bridge before landing safely in the water by Tower Pier on the North Bank of the river.
The dragon flew for around 20 minutes in a stunt by 20th Century Fox and Dreamworks Animation to bring their latest film launch to life.
The dragon was a replica of Toothless, a character from How to train your dragon 2 featuring Cate Blanchett and Gerard Butler.