https://www.nspcc.org.uk/preventing-abuse/signs-symptoms-effects/ Remember follow your instincts, If you suspect a child is at harm then you must tell Children's Social care services or ask a professional to do so on your behalf.
The family can ask questions about what might happen and why. If they find it hard to talk about it then they can ask for help. The social worker will explain how to find someone who can help.
If the child needs to be taken away from home immediately because they are in danger a request might be made to a magistrate for an emergency protection order. This lasts eight days and gives everyone time to sort out how to keep the child safe. The aim will be to try and help the child live at home as long as this is safe. Most children stay with their family even after a child protection conference.
If concerns have been raised about your child and you are worried then you should talk to the allocated social worker.