Appearing on ITV1's Daybreak, he said: "Why is it that one fire service can cost twice as much as another, even though if, per head of population ... it is in a very similar area?
"If those above the average cost just as much as the average, which provide really good fire services, there is £200 million to be saved.
"So it is right that these questions are asked, and that it is answered and debated by the fire and rescue service leaders themselves."
Dave Green of the Fire Brigades Union warned that lives could be lost and reducing the numbers of firefighters would be "completely wrong".
He said the reduction in callouts was due to the preventative work of the fire service, but any cuts could mean preventative work was diminished.
More top news
It is likely a strong legal argument could be made to justify UK air strikes against IS in Syria as well as Iraq.
Teacher Martin Goldberg's links to images of children were discovered as part of the same crackdown that exposed doctor Myles Bradbury.
A cloudy and damp start. Becoming drier and brighter this afternoon.