https://proudstars.blogspot.com/2015/12/london-on-alert-2000-firearms-officers.html
London on alert: 2,000 firearms officers placed on duty in the capital for New Year in an unprecedented security operation amid warnings Islamist fanatics may attack a European city
Every firearms officer in London will be on duty for the New Year celebrations tonight in an unprecedented security operation. Scotland Yard has cancelled leave for more than 2,000 armed police - the first time it has taken such a step. It comes amid intelligence warnings that Islamist fanatics may be planning a terror attack in a European city - although there is no specific information to suggest London is the target. One senior officer urged the public to be 'reassured' rather than alarmed by the extra police on duty. There was already a noticeable armed presence on the streets of the capital yesterday, including outside Horse Guards near Whitehall (pictured).