UK increases terrorism threat level to 'severe' | THE DAILY STAR

Britain upgraded the country's terrorism threat level Tuesday from "substantial" to "severe", after a deadly shooting rampage in Vienna and several attacks across France.

"Severe" -- the second-highest of five levels -- means an attack is "highly likely", said the domestic intelligence service MI5, which announced the change on its website.

The threat had been deemed "substantial", where an attack is "likely", since November 4 last year.