From here:

The UK’s terror threat level was tonight raised from substantial to severe, meaning an attack is ‘highly likely’.

There is only one higher threat level: critical, which means an attack is expected ‘imminently’.

Home Secretary Alan Johnson said the public needs to be vigilant, but stressed there was ‘no intelligence to suggest an attack is imminent’.

He said: ‘The Joint Terrorism Analysis Centre has today raised the threat to the UK from international terrorism from substantial to severe.

‘This means that a terrorist attack is highly likely, but I should stress that there is no intelligence to suggest than an attack is imminent.

Just in case anyone jumps to the rash conclusion that Muslims could possible have a tenuous connection to UK terror plots, Muslim police – who have no axe to grind whatsoever and are dedicated to routing out all non-Muslim terrorists, especially those on the far right – warn against Islamophopbia:

Britain’s Muslim police fear real terrorist threats coming from growing far-right movement.

LONDON – Muslim police in Britain have attacked the government’s anti-terrorism strategy for triggering an upsurge in Islamophobia and deepening divisions in communities.

The National Association of Muslim Police (NAMP) warned that the Prevent programme, which aims to combat violent extremism, was “stigmatising” Muslims by focusing on “so-called Islamist extremism.”

No Muslims were stigmatised during the writing of this post.