I am unable to offer a crisis service. If you are believe you child or other person to be at immediate risk of harm to themselves or others please dial the appropriate emergency services on 999 or take your child to A&E. If it is not an emergency then please call 111 or your GP. If you are concerned that a child is at risk then please call you local Safeguarding Hub.
The following websites contain some useful information relating to the management of self harm and risk to self.
Other helpful resources are Papyrus, the Samaritans, The CYP Haven, and Kooth