«This is a campaign we are facing — not a one-off event,» he said. «The second attack on July 21 should not be taken as some indication of weakening of the capability or the resolve of those responsible.

«This is not the B team. These are not amateurs. They made a mistake. They made one mistake. We are very, very lucky. The carnage that would have occurred had those bombs gone off would have at least been the equivalent to those on July 7.»