The UK's first urban cable car is due to open in east London at midday.
The line crosses over the Thames, creating a direct link between the 02 Arena in Greenwich and the ExCel exhibition centre.
It can carry 2,500 people an hour.
More top news
The mayor's pledge to the Tory conference was immediately condemned as 'pointless' by opponents.
Did the International Space Station take a wrong turn?
It's enough to put you off your dinner. Here's what they found inside.