First of all, there has to be a conviction on indictment. For example, for simple assault or another low-level threat there would most likely be a prosecution by summary conviction offence. There the court retains discretion whether or not to impose a prohibition order, and it can do so, with the proposed amendments in this bill, up to life for all classes of firearms. If an individual is convicted on indictment of a domestic violence offence, the prohibition will be for life for restricted or prohibited, and a minimum of 10 years up to life for non-restricted.
On April 23rd, 2015. See this statement in context.