Training for education, healthcare and children protection workers in technology used to abuse children online is "an absolute must", the NSPCC have said.
Jon Brown, the NSPCC lead on tackling sexual abuse, added:
Training to protect children from online abuse is an absolute must for those in social work, health, education and law.
It won't necessarily make them experts but will help them stay in touch with a rapidly changing technological world which poses a variety of risks for the young.
More top news
The world is facing a "global health emergency", according to the World Health Organisation (WHO).
A 25-year-old man has been arrested in Newport, South Wales, in connection with the Parsons Green terror attack, Scotland Yard said.
A milder night ahead with some cloud low enough to be misty in places.