LONDON—Security has been tightened at the rail stations to help ensure commuters' journeys to work on Monday are safe, the Transport Police said.
Extra officers are patrolling train stations and increased security checks were being carried out in response to the government raising the national security level to "critical" after the weekend's attacks, the transport police's Deputy Chief Constable Andy Trotter said on Sunday.
Security was heightened in Scotland after a jeep was driven through the glass front of Glasgow airport before being set alight by its occupants. Security has since been stepped up at airports nationwide.
On Friday, two parked cars were found in London's West End packed with petrol, gas cylinders and a large amount of nails causing disruption to nearby Piccadilly Tube station.
Trotter said no specific intelligence had been received about a possible attack on the tube or the country's rail network, but said it was important to reassure the travelling public and deter any attack.
He said: "We are absolutely determined to do all we can to make sure people's journeys to work are not unnecessarily disrupted, and we will also make sure our security checks ensure there's a smooth flow of people to their places of work tomorrow and to keep them safe in so doing."
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