London ready for Games
London 2012 organisers say they are ready to welcome the world to the Olympics in 100 days' time.
A series of events have been planned to highlight the landmark as the countdown to the Games begins in earnest.
London 2012 chief executive Paul Deighton said the preparations are proceeding according to plan - being both on time and within budget.
"We are absolutely where we want to be with 100 days to go - we are ready to welcome the world to London," said Deighton. "Millions of people around the UK are getting ready to celebrate the biggest event in sport. Eight million of the 11 million tickets have been sold to people in Britain, and we are sure that Brits will get hold of a chunk of the other three million too."
Many of the test events have already been held at the venues, but a big one comes on the first weekend of May with a cluster of events in the Olympic Park where 80,000 people are expected to attend, including 50,000 spectators in the Olympic Stadium to watch the London Disability Athletics Challenge.
Deighton said many lessons had already been learned from the test events, including in relation to security procedures. There have also been opportunities to improve some of the venues for sports.
The BMX track has been altered to cut the effect of high wind at the first jump, and the surface has also been changed after rain at the test event last August caused problems for the cyclists.
Modern pentathlon have brought in changes to their shooting event, while the basketball arena has been altered so that players do not have to go outside when walking from their waiting area into the arena.
"The test events have done what we really wanted them to do which was to give a real test on the field of play, to make sure that the surfaces and technology is right," added Deighton. "It also gives an opportunity to bring the workforce for that venue together in an operational sense, and experience how the team operates at that venue.
"It has been quite reassuring. Things have gone wrong, because things always do go wrong at events, and the issue is to have the teams in place to fix these things. Nothing, however, has made us radically change our plans."