Britain warns travelling nationals of heightened security risk from IS
"There is considered to be a heightened threat of terrorist attack globally against UK interests and British nationals from groups or individuals motivated by the conflict in Iraq and Syria," a statement from the Foreign Office said.
"You should be vigilant at this time."
The warning will be included on all government travel advice web pages, and comes in response to an increase in the generalised threat level, rather than a specific credible threat, the statement said.
In August Britain raised its national threat level to its second-highest rating, citing the risks posed by Islamic State fighters returning from Iraq and Syria. Prime Minister David Cameron has said those militants pose the country's greatest-ever Security (SECURITY.8)risk.
(Reporting by William James; Editing by Dominic Evans)