“MI5 has raised the official threat level to Britain from Northern-Ireland related terrorism, home secretary Theresa May has announced.
The British security service increased the level from moderate to substantial – which is the third most serious category out of five and means a terrorist attack is seen as a ‘strong possibility’.
Ms May said the move ‘reflects the continuing threat from dissident republican activity’.”
Source: MI5 fears Irish-related attack in Britain a ‘strong possibility’