Prime Minister David Cameron has said Britain could step up its involvement in Iraq.
Writing in the Sunday Telegraph he said: "True security will only be achieved if we use all our resources- aid, diplomacy, our military prowess- to help bring about a more stable world."
But one of his own MPs, who is in Iraq, has urged caution and said we need "much more information" before doing anything.
ITV News Political Correspondent Emily Morgan has this report:
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At times a little fair weather cloud may bubble up - and there will be a fairly brisk southeasterly breeze - but it will still feel hot.
Analysis of data from hospitals in England showed patients were waiting longer for ambulances, treatment and admission.
She told reporters: "I don't think it's fully sunk in how really bad that could have been, I know it's not the right decision."