The terrorist threat level for airports and main railway stations in Britain has been raised to "severe" as a precautionary measure, the BBC reported Friday.
The move includes major airport and railway terminals in London, according to security officials. However, they also stressed that there was no suggestion of an imminent attack, DPA reported.
The level for the transport hubs was raised from "substantial" to "severe" - which means an attack is "highly likely." The highest threat level is "critical", which means an attack is imminent.
Recent intelligence reports have warned of attacks in Europe modelled on the 2008 attack in the Indian city of Mumbai. The raised threat level was being introduced all over Europe, the BBC said.
"What we can expect to see is a greater police presence, particularly at airports and large railway stations," said the BBC report.