UK stopped 10 terrorist attacks in two years
Britain's security services and counter-terrorism units have foiled at least 10 attacks in the past two years, it can be revealed.
It also emerged that authorities are dealing with around 550 "live" cases at any one time.
The figures were disclosed by Deputy Assistant Commissioner Neil Basu, the new senior national co-ordinator for counter-terrorism policing.
The UK's official threat level for international terrorism currently stands at severe - meaning an attack is "highly likely".
Security services are on high alert following a string of recent attacks abroad and increased military pressure on IS - also known as Daesh - has raised fears of fresh atrocities.
Around 850 people linked to the UK and regarded as a security threat are believed to have taken part in the Syrian conflict, with just under half thought to have returned to the country.