Pressure mounts on GB athletes
- From the section Olympics
BBC Sport editor David Bond takes a look at the fitness of some of GB's medal hopes with 100 days until the London 2012 opening ceremony.
British sailor Ben Ainslie has recently returned to the water, following a back injury, but believes he is on track to compete at the Games.
Other GB hopefuls including Tom Daley, Sarah Stevenson and Jess Ennis have also suffered recent injuries or loss of form, and UK Athletics head coach Charles van Commenee says Ennis herself knows that she needs to improve.