Trending Syria airstrikes ISIS Terrorism Oscar Pistorius Walking With The Wounded Technology Money Travel Fashion Mums Home News UK News British Transport Police Leytonstone stabbing: Police warn more attacks 'highly likely' as officers treat Tube horror as 'terrorist incident' 22:41, 5 Dec 2015 Updated 23:27, 5 Dec 2015 By Alex Wellman WARNING: GRAPHIC CONTENT: Officers call on people to be vigilant in the face of possible terrorist atrocities following London Underground attack Shares Play 0:00 / 0:28 Fullscreen Mute Share Police have warned that a terror attack is "highly likely" to hit the UK after revealing they are treating a...