Spy chiefs are warning that new and terrible atrocities are inevitable in the UK – and security services may not be able to stop them.
The dire warning comes as a Mirror survey reveals up to 1.5 million Britons could be supporters of Islamic State.
On the 10th anniversary of the 7/7 bombings highlights hardcore support for the terror network, with one in 11 Brits holding a “positive” view of the group.
But the disturbing poll of 2,016 British adults taken over the weekend also found support for the group was up 2% to 9%.
It found 3% have a “very favourable view”, up 1% from a year ago – suggesting around half of Britain’s three million Muslims could be IS sympathisers.