
Winston’s Wish provides emotional and practical bereavement support to children, young people (up to age 25), and those who care for them (parents, carers, teachers).
Winston’s Wish – giving hope to grieving children (winstonswish.org)

NHS provides advice on how to continue looking after yourself while experiencing bereavement

Young Minds provide a guide for parents/carers to support a young person experiencing a bereavement

