But shadow health secretary Andrew Lansley said the four-hour target only served some patients.
Martin Shalley, president of the British Association of Emergency Medicine, said the four-hour target had put doctors under "huge pressure".
But shadow education secretary Stephen Twigg accused the government of being "out of touch" on school sport by not backing the two-hour target.
He said that demand for ambulances that day was 30% higher than usual, meaning the trust had not been able to hit its two-hour target.
Mr Cameron said earlier this week schools often saw the two-hour target as a maximum and told the BBC that Indian dance was being counted as physical education.
The NMC heard that failure to treat, discharge or admit patients within the government's four-hour target led to nurses at the hospital being shouted at and "made a spectacle" of.
The Belfast Trust reduced its 12-hour waits by 67%, the Northern Trust cut its figure by half while the South Eastern Trust achieved a 43% reduction in its breaches of the 12-hour target.
When a human wearing the EEG cap was introduced, the number of false alarms dropped to only five per hour, out of a total of 2, 304 target events per hour, and a 91 percent successful target recognition rate.
We loaded onto three CH-47 Chinook helicopters for a three hour transit to the target that included an inflight refueling.
The first shot on target took nearly half an hour to materialise when Clarets striker Nugent let a Wade Elliott pass roll across him before letting fly with a well-struck shot that was saved by Joe Hart.
James Fowler tested Nelson on the hour mark, then Kyle failed to hit the target as they pinned the Reds back.
Only thrusters could slow the lander to its target velocity of 1.7 miles per hour.
Gravesend failed to trouble Town keeper Tony Pennock in the first half-hour, but Hamid Barr did manage to hit the target following a corner, with Pennock equal to it.
It took West Brom half an hour to threaten and when they did their first effort on target brought the opening goal.
The first effort on target did not arrive until after the half-hour, with Paulo Ferreira venturing forward and slipping a pass in for Frank Lampard, who forced Van der Sar to make a smart low save.
The longest delays were reportedly seen at passport control on Wednesday, but queues have also been seen over the past month, with some UK and other European Economic Area passengers said to have experienced waits of up to an hour - more than double the 25-minute "service standards" target set by the Home Office.
Michael Clarke's men took less than an hour to polish off the tourist's tail-enders who were chasing a notional target of 500 for victory.
The hosts had to wait 24 minutes for their first shot on target - Milner drove tamely at Reina - but they were gifted an opening on the half-hour.
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