MI5 is warning British tourists that they are at risk from spies abroad and it has published advice on its website on how to thwart their efforts.

The site claims that even something as seemingly innocent as a smile or the offer of a little old-fashioned hospitality could be an attempt to recruit the unwary Brit.

Full story in today’s Guardian.

MI5’s advice, which includes:

avoid taking any protectively marked (classified) or commercially sensitive information with you