Here are some links that you may find useful 

Working together to safeguard children – https://www.gov.uk/government/publications/working-together-to-safeguard-children–2

safeguarding – https://www.safeguardingcambspeterborough.org.uk/children-board/

Talk pants –  https://www.safeguardingcambspeterborough.org.uk/children-board/

county lines – https://safeguardingcambspeterborough.org.uk/adults-board/adult-abuse-and-neglect/county-lines/

what to do if you’re worried a child is being abused –https://www.gov.uk/government/publications/what-to-do-if-youre-worried-a-child-is-being-abused–2

The prevent duty – https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/439598/prevent-duty-departmental-advice-v6.pdf