The government will review the new system after three years.
The last government reviewed the system 30 times since 2006, he says.
"I think the government should review their policy, listen to the people," he said in a telephone interview.
And he said the Government would review laws on carrying dangerous weapons in public.
The government is reviewing the position for loans after that date.
He said his government had still been reviewing those requests at the time of the bombings.
However, in practice the Government generally reviews sermons after the fact.
He said, though, that the government was still reviewing the appropriate place and time for the dispatch.
"All we are asking is that the Government stop construction and review its need so we can make our case."
Cameron says that the government will review what could be done to stop people using instant message services to plan riots.