David Cameron praises Olympic legacy
The PM's most senior ministers swapped Downing Street for the handball arena at the Olympic Park in east London, to mark 200 days until the Games begin.
Meanwhile the operators for the Aquatics Centre, handball arena and Orbit observation tower were announced.
Mr Cameron praised those who had helped provide venues "on time and on budget"
The Olympics will run from 27 July to 12 August and the Paralympics from 29 August to 9 September.