British army soldiers and police patrol London's Heathrow Airport during a previous terror alert. Transport police have been ordered to cancel their leave so extra officers can be deployed across the Tube and busy airportsTerror Threat To London Stations And Airports -- The Telegraph
Train stations across London have been put on high alert amid fears of a terrorist attack on transport hubs.
British Transport Police cancelled leave and called in extra officers after intelligence was received that terrorists could be planning attacks.
A security source said there was no “imminent” threat and the overall threat level had not changed but there was activity from one of a “handful” of extremist cells that cause concern at any time, leading to an adjustment in policing levels.
It is understood that “intelligence chatter” suggested that transport hubs in London could be a target.
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More News On England Raising Its Terror Alert Level
New terror alert hits trains and airports amid fears of Mumbai-style attack in London -- The Daily Mail
Britain raises terror threat level -- The Age/AFP
Cops’ show of force in new terror bomb alert -- Mirror
Transport system 'terror threat' -- Press Association
Security increased at UK transport hubs -- MSNBC
Police Increase Presence at London Transport Hubs, Sky Says -- Bloomberg
Police increase London presence amid terrorism fears -- USA Today