Do you DBS check your staff and volunteers?
Information about DBS checks can be viewed here.
Also see the LLR SCP procedures on Safe Recruitment, Selection and Retention for Staff and Volunteers.
NSPCC Safer Recruitment training
https://learning.nspcc.org.uk/training/safer-recruitment
The NSPCC offers training courses to give people the skills and techniques to safely recruit staff and volunteers into roles working with children and young people.