First crossing the Thames
Blockade on the north side of Tower bridge
Lots of police on bicycles - less polluting than motorised police
Heading away from Cannary Wharf
Blockade at Connaught bridge
Perhaps the best one for DSEi was on the south side of the Connaught Bridge. The police claimed the road was closed (it turned out it was only closed to us) so we all just waited on the roundabout which caused massive traffic chaos in all directions including the east entrance to DSEi.