Northern Ireland terror threat to UK raised to 'substantial'

The threat level in the UK from Northern Ireland-related terrorism has been increased from 'moderate' to 'substantial', Home Secretary Theresa May has announced.

This means a terror attack on British soil is a "strong possibility".

The move follows MI5's "most up to date assessment of the continuing threat from dissident republican activity".

PSNI Assistant Chief Constable Will Kerr said:

The threat level to the UK from international terrorism remains unchanged at 'severe', which means that an attack is highly likely.

The five threat levels are:

Northern Ireland terror threat to UK raised to 'substantial'

Threat level has been increased based on 'continuing threat from dissident republican activity'.