'Run, hide, tell - don't tweet!': Celebrities launch a Twitter campaign telling children caught up in terror attacks to flee rather than take pictures on their phones

Celebrities have launched a Twitter campaign telling children caught up in terror attacks to flee rather than take pictures on their phones.

A 'run, hide, tell' emoji has been created for the campaign, which is being supported by household names including TV survival star Bear Grylls and England footballer Jamie Vardy. 

Metropolitan Police Deputy Assistant Commissioner Lucy D'Orsi spoke of her concern at youngsters stopping to record footage at the launch of a campaign advising teenagers how to stay safe during attacks.

Grylls said: 'I've tackled some of the most dangerous environments on earth, but in the event of a terrorist attack there is only one thing I would advise: run, hide, tell.'

Miss D'Orsi said they should heed the advice to 'run, hide and tell' in a London Bridge-style van-and-knife massacre or suicide bombing like in Manchester.

In the first initiative of its kind, counter-terror chiefs are calling for the message to be routinely taught in schools as part of the national curriculum.

Miss D'Orsi said she was concerned many youngsters thought filming evidence for police would be helpful when 'safety should be the priority'.