A water polo test event will get underway later, as the Olympic Park is put through its paces ahead of the Games.
Six major events are taking place at various Olympic venues this week.
An international wheelchair tennis tournament will also begin at Eton Manor today, along with a para archery tournament at the Royal Artillery Barracks.
G4S should be the first outfit on a Government blacklist of high-risk firms that have failed to deliver, MPs have said.
Transport for London has created a new version of the tube map, to celebrate the success of Team GB at the London Olympics.
Olympic hero Mo Farah has shown off the newborn twins who inspired him to double gold-winning victory - and finally revealed their names.