Counter-terror officers are leading the investigation after two boys were left seriously injured.
Lawyers for the Co-op said they do not believe the complaints represent the broader views of staff
Conditions are expected to turn colder later in the week.
Defence Secretary John Healey says British personnel in Norway will rise from 1,000 to 2,000 over three years.
Hundreds of TikTok, Instagram and Facebook ads made misleading claims about health benefits, BBC finds.