The public are being urged to remain calm and alert as the UK terror threat is raised from 'severe to critical' meaning an attack may be imminent.
Extra armed police patrols will be at key locations across the region over the weekend in light of the Parsons Green attack in London on Friday September 15.
British Transport Police, have said more officers than usual will be patrolling at stations as well as on trains across the country.
Assistant Chief Constable Alun Thomas, head of Specialist Operations at British Transport Police said officer have been given 'specialist training in counter terrorism policing. He added " the day to day policing role is keenly focussed on keeping passengers and staff as safe as possible. Over the coming days, we'll be keeping a close eye to keep you safe, as well as making sure the nation's railways keep functioning as usual.'
The confidential national police hotline is 0800 789 321 or call 999 in an emergency.