Teenage cadets in Essex have been told not to wear their military uniforms in public amid fears of a terrorist attack.
Letters were issued to schools in the county, containing the warning, but King Edward VI Grammar School in Chelmsford, which runs a cadet force, refused to comment.
Similar guidance was passed nationally to servicemen following the murder of 25-year-old Fusilier Lee Rigby, who was hacked to death in the street near his barracks in Woolwich last year.
MI5 says the current threat to the UK from international terrorism is severe.
This was last updated in August, when it was upgraded from substantial.
Essex Police also declined to comment.