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Video: Armed police officers patrol trains across UK


Armed police officers are patrolling on board trains nationwide for the first time.

British Transport Police (BTP) announced the measure in a bid to "disrupt and deter criminal activity" on the rail network after the UK terror threat level rose to critical in the wake of the Manchester attack.

Armed officers have been patrolling on the London Underground network since December, but this is the first time they will travel on trains outside the capital.

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