This section allows the court to make a VOPO at the point it is dealing with the offender in respect of a specified offence; or where the person is found not guilty of a specified offence by reason of insanity; or is unfit to be tried and has done the act charged in respect of a specified offence.
The court may make a VOPO where it is satisfied that it is necessary for the purpose of protecting the public from the risk of serious violent harm.  A VOPO can be made in respect of specified offences committed (or alleged to have been committed) before, or after, commencement of this provision.
Commentary on Sections Violent offences prevention orders Section 56: Violent offences prevention order made on conviction, etc